• Implemented Multiband expander plugin series.
• Additional DSP optimizations of code with AVX, AVX2 and FMA3 instruction set or i586 and x86_64 architectures.
• Additional DSP optimizations for AArch64 architecture.
• Reworked and additionally optimized structure of all filter chains.
• Refactored and optimized dynamic filter processing.
• Updated behaviour of limiter in classic mode.
• Implemented multilingual interface support.
• Implemented workaround for Drag&Drop support initiated by GTK-based applications.
• Added russian translations of the user interface.
• Added desktop menu for standalone JACK plugins (contributed by David Runge).
• Added scalable vector graphics (SVG) logo (contributed by Sergey Tkach http://tkach.de/).
• Added 4.5 dB/octave envelope compensation for spectrum analyzer, renamed purple noise to violet noise in UI.
• Bypass button now supports LV2:enabled designation, that makes plugin to work more smooth with the host.
• Bypass button now handles effSetBypass VST event, that makes plugin to work more smooth with the host.
• Now LV2 and VST plugins can be compiled without the UI support.
• Removed strict requirement to build UI for LADSPA version of plugins.
• Implemented support of LV2 state:mapPath extension.
• Denied use of -ffast-math compiler option since it may provide incorrect behaviour of standard C
  library functions like isnan() and isinf().
• Fixed upward compressor behaviour: now upward compressor has additional compensation knee that prevents from
  infinite gain boost on low-level input signals.
• Fixed bug in trigger that caused notes to be immediately cancelled.
• Fixed bug in Profiler plugin that caused crash on saving files to WAV format.
• Fixed bug with producing NaNs by dynamic processors in some cases when knee has zero length.
• Fixed stack corruption bug when working with UI styles and colors.
• Fixed problem with matched Z transform caused by filter characteristics optimizations.
• Fixed bug with pop-up menus in parameter's editing popup window that caused user interface to lock.
• Added SIGPIPE signal blocking for JACK plugin format at startup.