0.13.0beta Release

This is a maintenance release just to fix some issues with compilers and platforms, stability issues and other bugs. Newer library version updates as well.

• Many bug fixes
• Many compile fixes (newer autotools, newer gcc, clang, 64bit, etc)
• PortAudio v19 support
• fftw3 support
• PulseAudio support
• some jack fixes
• Updated Finnish translation
• New Czech translation