Fixed wave view rendering; added validation
Exporting: fixes LFO sync
Merge pull request #216 from wongcc966422/issue204

Exporting: fixes LFO sync
Merge pull request #215 from wongcc966422/issue174

AudioFileProcessor: Fixed wave view rendering; added validation
Updated sfxr logo
Added custom waveforms to sample directory
Set default directory to the waveform directory when opening an audio file for a user-defined waveform
Fix cancel button behaviour on waveform open dialog