Changelog

4.8.5

• Fixed an issue where in some cases LZMA2 decompression would fail with an incorrectly thrown error.

4.8.4

• Fixed an issue where in some cases BZip2 compression would produce incorrect output.
• TarReader methods now always return nil after reaching the end of a TAR container.

4.8.3

• There are now minimum deployment targets specified in Swift Package Manager manifest.
• The properties of GzipHeader are now var-properties (instead of let).
• GZip extra fields are now supported.
  • Added GzipHeader.ExtraField struct.
  • Added GzipHeader.extraFields property.
  • Added a new extraFields argument to GzipArchive.archive function (with a default array empty value).
• Fixed potential crashes that could occur when processing GZip archives truncated in a header or a "footer".
• Some non-well-formed values of PAX extended header records no longer cause TarError.wrongPaxHeaderEntry to be thrown.
  • The record values with newline characters are now fully processed.
  • The record values that do not contain UTF-8 strings are now ignored.
• swcomp changes:
  • The symbolic links are now extracted with the values recorded in the containers.
  • The hard links are now extracted from TAR containers instead of being ignored.
  • Fixed build issues on Linux and Windows.
  • benchmark is now a command group with two commands, run and show.
  • Added -a, --append option to the benchmark run command.
  • Added -d, --description option to the benchmark run command.
  • Added -t, --preserve-timestamp option to the benchmark run command.
  • The file format of saved results is now more flexible and allows multi-way comparisons.
  • Improved precision of time measurements in benchmarks.

4.8.2

• Swift 5.1 is no longer supported.
• Increased minimum deployment versions (when installed via CocoaPods or Carthage) for Darwin platforms: macOS from 10.10 to 10.13, iOS from 9.0 to 11.0, tvOS from 9.0 to 11.0, and watchOS from 2.0 to 4.0.
• Fixed issues when building for iOS either directly or via Carthage on systems with Xcode 14.
• Fixed potential crashes that could occur when decompressing truncated Deflate inputs.
• swcomp changes:
  • swcomp is now enabled by default in Swift Package Manager manifest.
  • Added -l, --list option to container commands (7z, tar, and zip).
  • Systematized error exit codes and messages.
  • Added -s, --save option to the benchmark command.
  • Added -c, --compare option to the benchmark command.
  • Added -i, --iteration-count option to the benchmark command.
  • Added -W, --no-warmup option to the benchmark command.
  • Benchmarks now output standard deviation instead of speed uncertainty.

4.8.1

• Fix incorrect detection of truncated GZip archives.

4.8.0

• Added TarReader and TarWriter structs which allow more iterative work with TAR containers while helping with reducing memory usage.
• Fixed a crash that could happen when decompressing Deflate and BZip2 inputs truncated in a certain way.
• In API reference documentation the Container category has been split into separate categories for each container type.
• swcomp changes:
  • Certain error messages were made a bit clearer.
  • Added reader-tar and writer-tar subcommands to the benchmark command.
  • Changed the printing format of the benchmark speed.

4.7.0

• Added full-featured support for LZ4 compression and decompression by introducing 5 new functions inside LZ4 enum.
  • This enum conforms to the DecompressionAlgorithm and CompressionAlgorithm protocols.
  • Added SWCompression/LZ4 subspec for CocoaPods users.
  • Added support for LZ4 algorithm used in 7-Zip containers.
• Added DataError enum which conforms to Error and Equatable protocols.
• Swift 5.0 is no longer supported.
• Fixed an issue where in some cases Deflate compression would produce incorrect output.
• Optimized performance of Deflate compression.
• swcomp changes:
  • Increased the lowest required version of SwiftCLI dependency to 6.0.0.
  • Added lz4 command with many options to support all LZ4 features (both compression and decompression).
  • Added --use-format option to the tar command which when used with the -c option allows to force usage of a selected TAR format when creating a TAR container.
  • The -j and -z options of the tar command can now be used together with the -c option to create compressed TAR containers.
  • Added un-lz4, comp-lz4, and comp-lz4-bd subcommands to the benchmark command.
  • Benchmark commands for compression now report compression ratio.

4.6.1

• Fixed a crash in LZMA2 when trying to process an empty Data.
• swcomp changes:
  • Added benchmark create-tar benchmarking command.
  • Benchmarking results are now printed in the units of speed instead of time elapsed.

4.6.0

• Swift 4.2 is no longer supported.
• Minimum iOS deployment version (when installed via CocoaPods or Carthage) is now 9.0.
• Increased the lowest required version of BitByteData dependency to 2.0.
• Added the TarContainer.create(from:force:) function which allows to specify TAR format.
  • It is now possible to create TAR containers of GNU, ustar (POSIX), and pre-POSIX formats.
• The TarContainer.create(from:) function (alongside with the newly added function) no longer throws.
  • The TarCreateError.utf8NonEncodable error is now never thrown.
• Handling of truncated TAR containers should now be more consistent.
  • Previously introduced check for truncated containers now throws the TarError.tooSmallFileIsPassed error instead of TarError.wrongField.
• Documentation has been updated:
  • Adjusted documentation of the TarEntryInfo properties to account for other formats used in creation of a container.
  • Adjusted documentation of the TarError.tooSmallFileIsPassed error to mention its use in all situations when truncated data is encountered.
• swcomp changes:
  • zip -i command now prints entry comments only if they are not empty.
  • Slight grammatical improvements to the help messages of swcomp.

4.5.11

• Fixed a crash when processing a truncated TAR file.
• Added missing documentation for LZMAProperties.init().
• Windows is now supported.

4.5.10

• Fixed compilation issues on Windows (PR #22 by @trametheka).
• Performed minor optimizations to BZip2 and Deflate compression functionality.
• Increased the lowest required version of BitByteData dependency to 1.4.4.

4.5.9

• Improved performance of LZMA/LZMA2 and, consequently, of XZ.
• Fixed a rare crash when processing a BZip2 archive which uses non-standard (but allowed) run length values.

4.5.8

• Fixed incompatibility with Carthage --use-xcframeworks method of installation.

4.5.7

• Fixed a crash when trying to open a very small file as a 7-Zip container, a BZip2 "archive", a GZip archive (both when using unarchive and multiUnarchive), a LZMA "archive", a XZ archive (both when using unarchive and splitUnarchive), a ZIP container, or a Zlib archive.
• Fixed a crash when trying to open an unexpectedly truncated file as a GZip or XZ archive.
• Fixed a crash when trying to open an invalid file as a ZIP container. The ZipError.notFoundCentralDirectoryEnd error is now thrown instead as was originally intended.
• Fixed a crash when trying to read a GZip or Zlib header from a very small file.
• Fixed a compilation warning in BZip2.

4.5.6

• Fixed a compiling issue on Linux with Swift 5.3.

4.5.5

• Fixed a crash which was sometimes happening when encountering non well-formed Extended Timestamp in ZIP files.

4.5.4

• Fixed issues when installing using SPM or Xcode in certain situations.
• Fixed incompatibility with Swift Package Manager from Swift 4.2.

4.5.3

• Improved compatibility with the latest versions of Swift (5.x) and Xcode.

4.5.2

• Increased the lowest required version of BitByteData dependency to 1.4.1.

4.5.1

• Minimum required version of BitByteData is now 1.4.0.
• Updated to support Swift 4.2.
• Added default values to the properties of LZMAProperties struct.
• Added init() to LZMAProperties struct.
• Improved the detection of Swift versions less than 4.2 in the workaround for the crash in Data.prefix(upTo:).
• Documentation updates:
  • Fixed an outdated example in README (PR #4 by @brianantonelli).
  • Fixed grammar issues related to the usage of articles, during/while, and others.
• swcomp changes:
  • Minimum required version of SwiftCLI is now 5.2.0.
  • Improved the layout of output of benchmark commands.

4.5.0

• Added APIs which allow to specify LZMA properties for decompression:
  • Added LZMAProperties struct with simple memberwise initializer.
  • Added LZMA.decompress(data:properties:uncompressedSize:) function with uncompressedSize argument being optional.
• Added support Delta "filter" in both XZ archives and 7-Zip containers.
• Added support for SHA-256 check type in XZ archives.
• Added ZipEntryInfo.crc property.
• Fixed incorrect result of XZArchive.unarchive and XZArchive.splitUnarchive functions when more than one "filter" was used.
• Reduced in-memory size of ZipEntryInfo instances.
• Clarified documentation for LZMA.decompress(data:) to explain expectation about data argument.
• swcomp changes:
  • zip -i command now also prints CRC32 for all entries.
  • -v is now accepted as an alias for --verbose option.

4.4.0

• Added APIs which allow creation of new TAR containers:
  • Added TarContainer.create(from:) function.
  • Added TarCreateError error type with a single case utf8NonEncodable.
• TarEntry.info and TarEntry.data are now var-properties (instead of let).
• Accessing setter of TarEntry.data now automatically updates corresponding TarEntry.info.size with data.count value (or 0 if data is nil).
• Added TarEntry.init(info:data:) initializer.
• Most public properties of TarEntry are now var-properties (instead of let). Exceptions: size and type.
• Added TarEntryInfo.init(name:type:) initializer.
• Improved compatibility with other TAR implementations:
  • All string fields of TAR headers are now treated as UTF-8 strings.
  • Non-well-formed integer fields of TAR headers no longer cause TarError.wrongField to be thrown and instead result in nil values of corresponding properties of TarEntryInfo (exception: size field).
  • Base-256 encoding of numeric fields is now supported.
  • Leading NULLs and whitespaces in numeric fields are now correctly skipped.
  • Sun Extended Headers are now processed as local PAX extended headers instead of being considered entries with .unknown type.
  • GNU TAR format features for incremental backups are now partially supported (access and creation time).
• TarContainer.formatOf now correctly returns TarFormat.gnu when GNU format "magic" field is encountered.
• A new (copy) Data object is now created for TarEntry.data property instead of using a slice of input data.
• Fixed incorrect file name of TAR entries from containers with GNU TAR format-specific features being used.
• Fixed TarError.wrongPaxHeaderEntry error being thrown when header with multi-byte UTF-8 characters is encountered.
• Fixed incorrect values of TarEntryInfo.ownerID, groupID, deviceMajorNumber and deviceMinorNumber properties.
• Slightly improved performance of LZMA/LZMA2 operations by making internal classes declared as final.
• swcomp changes:
  • Added -c, --create option to tar command which creates a new TAR container.
  • Output of bencmark commands is now properly flushed on non-Linux platforms.
  • Results for omitted iterations of benchmark commands are now also printed.
  • Iteration number in benchmark commands is now printed with leading zeros.
  • Fixed compilation error on Linux platforms due to ObjCBool no longer being an alias for Bool.

4.3.0

• Updated to support Swift 4.1.
• Minuimum required version of BitByteData is now 1.2.0.
• Added APIs which allow to use custom ZIP Extra Fields.
  • Added ZipExtraField protocol.
  • Added ZipExtraFieldLocation enum.
  • Added ZipContainer.customExtraFields property.
  • Added ZipEntryInfo.customExtraFields property.
• Added APIs which allow to get information about TAR's format:
  • Added TarContainer.Format enum which represents various formats of TAR containers.
  • Added TarContainer.formatOf(container:) function which returns format of the container.
  • Added -f, --format option to swcomp's tar command which prints format of TAR container.
• Added TarEntryInfo.compressionMethod property which is always equal to .copy.
• Added documenation for Container.Entry and ContainerEntry.Info associated types.
• Reverted "disable symbol stripping" change from 4.2.0 update, since underlying problem was fixed in Carthage.
• Benchmarks changes:
  • Iterations number increased from 6 to 10.
  • There is now a zeroth iteration which is excluded from averages.

4.2.2

• Fixed skipping entries in SevenZipContainer.open(container:) in some rare cases.
• Fixed crash in SevenZipContainer.info(container:) when either entry's size or CRC32 is not present in the container.
• Updated some Container-related documentation.

4.2.1

• Now accepts 7-Zip containers with minor format versions from 1 to 4 (previously, was only 4).

4.2.0

• Minuimum required version of BitByteData is now 1.1.0.
• Added ownerID and groupID properties to ZipEntryInfo, which stores uid and gid from Info-ZIP New Unix and Info-Zip Unix extra fields.
• Added unknownExtendedHeaderRecords property to TarEntryInfo which includes unrecognized entries from PAX extended headers.
• Prevent double slashes in TarEntryInfo.name when prefix header's field was used, but it had trailing slash, which is, by the way, against TAR format.
• Additionally improved speed of BZip2 compression: Now doesn't create more Huffman trees when they cannot be used, since maximum amount of Huffman tables was generated.
• Disable symbol stripping in archives generated by Carthage and published on GitHub Releases.
• swcomp changes:
  • Replaced 9 block size options of bz2 command with a single one: -b (--block-size).
  • Now prints entry type-specific properties in output of tar, zip and 7z commands with -i (--info) option.
  • Renamed perf-test command group to benchmark.

4.1.1

• Fixed incorrect value of TarEntryInfo.name when ustar format's "prefix" field was used.
• Updated documentation for TarEntryInfo.

4.1.0

• Some internal classes were published as a separate project, BitByteData. This project is now used by SWCompression.
• Several performance improvements have been made.
• "Fixed" a problem when some BZip2 archives created by SWCompression could not be opened by original BZip2 implementation.
• Modification time stored in ZIP's "native" field is now calculated relative to current system's calendar and time zone.
• swcomp additions:
  • Added -1...-9 options to bz2 -c command which specifies what block size to use for BZip2 compression.
  • Added -i, --info option to gz command which prints GZip's header.
  • Added comp-deflate and comp-bz2 subcommands to perf-test command which can be used for performance testing of Deflate and BZip2 compression.
  • Corrected descriptions of -e options for zip, tar and 7z commands.
  • Now sets permissions for extracted files only if they are greater than 0.

4.0.1

• Git tag for updates no longer has "v" prefix.
• Fixed incorrectly thrown XZError.wrongDataSize without actually trying to decompress anything.
• Fixed crash when opening 7-Zip containers with more than 255 entries with empty streams.
• No longer verify if ZIP string field needs UTF-8 encoding, if language encoding flag is set.
• Reduced memory usage by Deflate compression.
• Added "perf-test" command to swcomp, which is used for measuring performance.
• Internal changes to tests:
  • LONG_TESTS and PERF_TESTS compiler flags are no longer used for testing.
  • Reduced size of test6 and test7 from 5 megabytes to 1 megabyte.
  • Removed test7 for BZip2 compression.
  • Added results for 4.0.0 and 4.0.1 from new performance measuring scheme.

4.0.0

• Reworked Container API:

  • New protocol: ContainerEntryInfo.
  • ContainerEntry:
    • Now has an associated type Info: ContainerEntryInfo.
    • Now has only two members: info and data properties; all previous members were removed.
  • Container:
    • Now has an associated type Entry: ContainerEntry.
    • open function now returns an array of associated type Entry.
    • Added new function info, which returns an array of Entry.Info.
  • All existing ZIP, TAR and 7-Zip types now conform to these protocols.
    • All Entry types now have only two members: info and data (see ContainerEntry protocol).
  • Added missing types for ZIP, TAR and 7-Zip with conformance to these protocols.
  • Standardized behavior when ContainerEntry.data can be nil:
    • If entry is a directory.
    • If data is unavailable, but error wasn't thrown for some reason.
    • 7-Zip only: if entry is an anti-file.

• Added several new common types, which are used across the framework:

  • CompressionMethod.
    • Used in GzipHeader.compressionMethod, ZlibHeader.compressionMethod, ZipEntryInfo.compressionMethod.
  • ContainerEntryType.
    • Used in ContainerEntryInfo.type and types that conform to ContainerEntryInfo protocol.
  • DosAttributes.
    • It is the same as previous SevenZipEntryInfo.DosAttributes type.
    • Used in SevenZipEntryInfo.dosAttributes and ZipEntryInfo.dosAttributes.
  • Permissions.
    • It is the same as previous SevenZipEntryInfo.Permissions type.
    • Used in ContainerEntryInfo.permissions and types that conform to ContainerEntryInfo protocol.
  • FileSystemType.
    • Used in GzipHeader.osType and ZipEntryInfo.fileSystemType.

• Removed GzipHeader.FileSystemType.

• Removed GzipHeader.CompressionMethod.

• Removed TarEntry.EntryType.

• Removed following errors:

  • SevenZipError.dataIsUnavailable
  • LZMAError.decoderIsNotInitialised
  • LZMA2Error.wrongProperties (LZMA2Error.wrongDictionarySize is thrown instead).
  • TarError.wrongUstarVersion.
  • TarError.notAsciiString (TarError.wrongField is thrown instead).
  • XZError.wrongFieldValue (XZError.wrongField is thrown instead).

• Renamed following errors:

  • BZip2Error.wrongHuffmanLengthCode to BZip2Error.wrongHuffmanCodeLength.
  • BZip2Error.wrongCompressionMethod to BZip2Error.wrongVersion.
  • TarError.fieldIsNotNumber to TarError.wrongField.
  • XZError.reservedFieldValue to XZError.wrongField.

• Standardized behavior for errors named similar to wrongCRC:

  • These errors mean that everything went well, except for comparing the checksum.
  • Their associated values now contain all "successfully" unpacked data, including the one, which caused such an error.
    • This change affects BZip2.decompress, GzipArchive.multiUnarchive, XZArchive.unarchive, XZArchive.splitUnarchive, ZipContainer.open.
  • Some of these errors now have arrays as associated values to account for the situations with unpacked data split.
    • This change affects GzipArchive.multiUnarchive, XZArchive.unarchive, XZArchive.splitUnarchive, ZipContainer.open.

• Removed SevenZipEntryInfo.isDirectory. Use type property instead.

• SevenZipEntryInfo.name is no longer Optional.

  • Now throws SevenZipError.internalStructureError when file names cannot be properly processed.
  • Entries now have empty strings as names when no names were found in container.

• Renamed XZArchive.multiUnarchive to XZArchive.splitUnarchive.

• XZArchive.unarchive now processes all XZ streams similar to splitUnarchive, but combines them into one output Data.

• Fixed "bitReader is not aligned" precondition crash in Zlib.

• Fixed potential incorrect behavior when opening ZIP containers with size bigger than 4 GB..

• Updated to use Swift 4.

• Various improvements to documentation.

• "swcomp" is now included is as part of this repository.

3.4.0

• Added support for BZip2 compression.
• Added CompressionAlgorithm protocol.
• Deflate now conforms to CompressionAlgorithm protocol (as well as BZip2).
• Deflate.compress(data:) no longer throws.
• ZlibArchive.archive(data:) no longer throws.
• Fixed crash in some rare cases for corrupted BZip2 archives (but throws BZip2Error instead).

3.3.1

• Fixed out of range index crash in BitReader.

v3.3.0

• Introduced support for 7-Zip containers.
• Added TarEntry.isLink.
• Added ZipEntry.isLink and ZipEntry.linkPath.
• Added ZipEntry.isTextFile.
• Added ContainerEntry.isLink and ContainerEntry.linkPath.
• Added support for NTFS extra fields in ZIP containers.
• Detection of UTF-8 in ZIP string fields now favors Code Page 437 more.
• Renamed build flags included in Cocoapods configurations.
• Fixed multithreading problems for ZipEntry.data().
• Fixed posixPermissions in TarEntry.entryAttributes containing UNIX type byte in some cases.

v3.2.0

• Split source files.
• Removed SWCompression/Common subpodspec.
• Moved test files into separate repository as a submodule.
  • Fixed problem with Swift Package Manager requirement to disable smudge-filter of git-lfs.
• Support creation time for TarEntries.
• Add support for ZIP standardized CP437 encoding of string fields.
  • Fallback to UTF-8 if this encoding is unavailable on the platform.
  • Fallback to UTF-8 if it is detected that string fields is in UTF-8.
    • Necessary, because Info-ZIP doesn't marks fields it creates with UTF-8 flag.
• Fixed problem with finding zip64 end of Central Directory locator.
• Fixed problem with accessing ZipEntry's data two or more times.
• Fixed problem with accessing data of BZip2 compressed ZipEntry.
• Fixed problem with reading zip64 data descriptor.

v3.1.3

• Added support for GNU LongLinkName and LongName extensions of TAR format.
• Added support for modification timestamp from extended timestamps ZIP extra field.

v3.1.2

• wrongUstarVersion error is no longer incorrectly thrown for GNU tar containers.

v3.1.1

• Permissions attributes for TarEntry are now base-10.
• Now throws fieldIsNotNumber error when encounters non-number required field in TAR header.
• Slightly improved documentation.

v3.1.0

• Added support for multi-member GZip archives.
• Added support for multi-stream XZ archives.
• Added property which allows access various entry's attributes for both Tar and ZIP.
• Several Container/Zip/TarEntry's properties are now considered deprecated.
• ZipEntry now provides access to modification time, posix permission and entry type using the new entryAttributes property.
• Added support for PAX link path.
• Fixed several problems with decompressing files compressed into ZIP container using LZMA.
• Fixed discarding ZIP containers with wrongVersion error when they contain LZMA or BZip2 compressed files.
• Encrypted ZIP containers should now be detected properly.
• ZipError.compressionNotSupported is now only thrown when trying to get entry's data and not when just opening the archive.
• Text fields from GZip header are now decoded with correct encoding.
• Improved Deflate comrpession rate for some corner cases.
• Improved BZip2 performance for cases of big data sizes.

v3.0.1

• Significanty reduced memory usage and improved speed of Deflate compression.

v3.0.0

• All errors have been renamed, so they conform to Swift Naming Conventions (lowerCamelCase).
• Added Container and ContainerEntry protocols.
• Most methods have their arguments' labels renamed to make usage shorter.
• Most documentation have been edited to improve readability.
• Multiple files with results of performance tests replaced with consolidated one.
• Enabled support for LZMA and BZip2 compression algorithms.
• ZipEntry now conforms to ContainerEntry protocol.
• This also means that entry's data is now provided through ZipEntry.data() instead of ZipContainer's function.
• Improved detection of directories if ZIP container was created on MS-DOS or UNIX-like systems.
• ZipError.wrongCRC32 now contains entry's data as associated value.
• Fixed a problem where Zip64 sized fields weren't used during processing of Data Descriptor.
• Added some measures to prevent crashes when it is impossible to read ZIP text fields (file name or comment) in UTF-8 encoding
• Added support for TAR containers in various format versions.
• Now GzipArchive.unarchive function unarchives only first 'member' of archive.
• Added support for GZip archive's option in archive function.
• GzipHeader.modificationTime is now Optional.
• GzipHeader.originalFileName renamed to GzipHeader.fileName.
• Added GzipHeader.isTextFile property which corresponds to same named flag in archive's header.
• Now XZArchive.unarchive function unarchives only first stream of archive.
• Check for xz archive's footer's 'magic' bytes is now performed at the beginning of processing.
• XZ header's checksum is now checked before parsing reserved flags.
• BZip2 now performs CRC32 check for decompressed data.
• Removed internal LZMAOutWindow auxiliary class.

v2.4.3

• Fixed incorrect calculation of header's checksum for GZip archives.

v2.4.2

• Fixed a problem, where ZipEntry.fileName was returning fileComment instead.

v2.4.1

• Lowered deployment targets versions for all (supported) Apple platforms.

v2.4.0

• Reduced memory usage in some cases.
• Added Zlib archiving function.

v2.3.0

• Improved Deflate compression performance.
• Added GZip archiving function.
• Fixed a problem when Deflate uncompressed blocks were created with one extra byte.

v2.2.2

• Fixed problem with zero-length uncompressed blocks.

v2.2.1

• Now creates uncompressed block instead of huffman if it will provide better results (in terms of "compression").
• Small internal changes.

v2.2.0

• Somewhat limited support for Deflate compression.
• API for parsing ZIP entries.

v2.1.0

• ZIP containers support.
• HuffmanTree is no longer part of SWCompression/Common.
• Updated documentation.

v2.0.1

• Fixed incorrect reading adler32 checksum from zlib archives.
• Removed LZMA_INFO and LZMA_DIAG build options.
• (2.0.0) GZip archives with multiple 'members' are now parsed correctly.

v2.0.0

• LZMA decompression.
• XZ unarchiving.
• Once again performance improvement (this time for real).
• Added public API functions for reading gzip/zlib headers.
• Added documentation.
• Added checksums support.
• Added new errors subtypes.
• Added two build options for diagnostical use.
• Rephrased comments to public API.

v1.2.2

• Small performance improvement.

v1.2.1

• Removed HuffmanLength.
• Rewritten DataWithPointer.
• Added performance tests.

v1.2.0

• Reimplemented Huffman Coding using a tree-like structure.
• Now only DataWithPointer is used during the processing.

v1.1.2

• Fixed memory problem in Deflate.
• Improved overall performance.

v1.1.1

• Fixed problems when building with Swift Package Manager.
• Added missing files to watchOS scheme.
• Every release on github now will have an archive with pre-built framework.
• Added info about performance to README.

v1.1.0

• Added BZip2 decompression.
• Introduced subspecs with parts of functionality.
• Additional performance improvements.
• Fixed potential memory problems.
• Added a lot of (educational) comments for Deflate

v1.0.3

Great performance improvements (but there is still room for more improvements).

v1.0.2

• Fixed a problem when decompressed amount of data was greater than expected.
• Performance improvement.

v1.0.1

Fixed several crashes caused by mistyping and shift 'overflow' (when it becomes greater than 15).

v1.0.0

Initial release, which features support for Deflate, Gzip and Zlib decompression.