Fast LZMA2 DLL v1.0.0

• Breaking changes have been made to the API functions.
• Some of the options have been renamed.
• Optimized the encoder, incorporating some of Igor Pavlov's improvements to 7-Zip 18.05, and some novel ones. The speed increase is
  about 5% - 8%.
• Moved detection of repeats from the single-threaded initialization stage to a later, multi-threaded stage to increase speed.
• Removed two compression levels, reducing the total to 10, and tweaked the parameters.
• Improved calculation of the match buffer size. It can still be changed in the options, but the meaning of the value is different.
• Replaced the callbacks for writing and progress with timeouts and new functions to gain direct access to the dictionary buffer and
  the compressed data buffers.
• Added Igor Pavlov's assembler-optimized decoder.
• Multi-threaded decompression.