Kana input development

Added parsing for kana entry
Needs test
Test of kana entry and small fixes
Fix kana keypad bug
Added more keypad code, GLCD updates
General GUI and Vocal Synth development
Fixed vocal synth bugs
Small fixes
Added SynthManager
Added menu option enums
Small refactoring
Added SynthMan config options
JpSynthManager dev and CAD files

Added basic CAD files
Added envelope options to JpSynthManager
Added gitignore for LibreCAD temp files
Updated main panel CAD
CAD development
More CAD development

Most CAD files now at final version
Updated washers drawing
Small changes for electronics
Merge pull request #2 from DanNixon/develop

Develop