Release v0.0.6-alpha

• Add VST3 support
• Standardise how tags and folders will be used in instruments, presets and impulse responses: https://floe.audio/develop/tags-and-folders.html
• Fix sustain pedal
• Remove 'retrig CC 64' parameter from layer MIDI. This was mostly a legacy workaround from Mirage. Instead, we just use the typical behaviour that when you play the same note multiple times while holding the sustain pedal, the note plays again - stacking up.
• Fix package installation crash after removing folders
• Fix markers staying on ADSR envelope even when sound is silent
• Fix MIDI transpose causing notes to never stop
• Fix peak meters dropping to zero unexpectedly
• Fix not finding Mirage libraries/presets folders