v1.9.0-alpha.4

Bug Fixes

• Resolves an issue that UI may stop updating in the middle of job (563905d, #134)

Improvements

• Adds Event Trigger configuration UI (3bc807e, #84)
• Adds the "Forgot your password?" link to the sign in page (b067a41)
• Disables spindle control buttons when running a gcode program (#138)
• Adds support for displaying current controller state (705de69)
• Removes react-css-modules dependency and fixes eslint warnings
• Translation updates (40c0f37)