miurahr/py7zr: Support "Append" mode

Changes from v0.9.2 Fixed Fix BCJ(x86) filter code with a missing logic which cause extraction error for certain data. (#249, #250) Raise PasswordRequired when encrypted header without passing password (#234, #237) CLI: don't raise exception when password is wrong or not given.(#229) Fix specification typo. Catch exception in threading extraction(#218,#219) Added Compatibility test with python-libarchive-c/libarchive for compression(#247) Document: express how to handle multi-volume archive (#243) SevenZipFile.needs_password() method.(#208, #235) CLI: Support append mode command line.(#228) Support "APPEND" mode. User can open SevenZipFile() class with mode='a' (#227) Changed Calculate CRC32 of header without re-reading header from disk again.(#245) read(), extract(): improve performance when specifying parts of archived file, by skipping rest of arcvhive when target file has extracted.(#239,#242) read(), extract(): improve performance when specifying parts of archived file, by not running threads for unused compression blocks(folders).(#239,#242) docs: improve API documentation.(#244) setup: set minimum required python version as >=3.5 Compression will be happened when call write() not close() (#222, #226) Handle file read/write in SevenZipCompressor/Decompressor class (#213