lrzip-next pre-production release v0.12.1

THIS RELEASE HAS A DECOMPRESSION BUG. USE RELEASE 0.12.2!

This release introduces the --nobemt option which stands for NO BackEnd Multi Threading. Issue #133 discusses this. For lzma, it will pass the threads parameter == 1 when used. The lzma backend will interpret this to NOT use the multi threaded match finder. This was designed for a particular use case, and will have worse performance generally. This option has no meaning for other backends currently.

Starting with this release, x86_64 binary file will be uploaded. This upload will only work with glibc 2.36. The binary is signed with my key 0xEB2C5812.