Fix command list updating #21
Improvement for CustomizerExtender #23
Add notificatoin for upgrade #22
Minor refactoring
Add core update-db #22
Update README
Change action name to Refresh Code Completion
Check Options value #22
Add notification for plugin and theme #22
Move files to proper place #22
Minor improvement
Update README
Update version number to 0.6.3
Merge branch 'nb74dev'