Release 1.2.6

• Implemented Mixer plugin series for 4, 8 and 16 Mono/Stereo channels.
• Implemented A/B Tester plugin series with blind option.
• Parametric Equalizer is now smoothly operating with frequency/gain/q factor for each
  mode: FIR, IIR, FFT, SPM.
• Added popup menu for more precise control over the equalizer dot on the graph for
  Parametric Equalizer.
• Added frequency and note displaying (with detune in cents) over the currently
  configured filter in the Parametric Equalizer.
• Implemented automatic and manual inspect mode for filters in Parametric Equalizer.
• Implemented more user-friendly inspecting slider to the Spectrum Analyzer plugin series:
  frequency value, amplitude and note (with detune in cents) are displayed now near the
  slider which can be adjusted with mouse movements.
• Added basic SFZ import support by the Multisampler plugin series.
• Added shared objects related to 3D rendering to LV2, VST and CLAP packages.
• Fixed buggy tether for the parameter popup window.
• Fixed improper data stream synchronization using LV2:Atom protocol.
• Implemented linear ramping lramp_* functions in the lsp-dsp-lib optimized for
  i686, x86_64, ARM32 and AArch64 architectures.
• Fixed avx::dyn_biquad_process_x8_fma3 function implementation which could cause
  some data distortion in the output buffer.
• Fixed plugin state out of sync for CLAP plugin format on state restore in REAPER.
• Several bugfixes in UI libraries.
• Better support for build under different ARM architectures.
• The Windows support status has been changed to 'Compiles'.
• The AArch64 support status has been changed to 'Full'.