0.1.5

Add togglePSU API Command (#33)
Add getPSUState API Command (#34)
Set initial state of the switching GPIO accordingly (#40)
Add Pseudo On/Off G-Code Switching (#26)
Added M106 to autoOnTriggerGCodeCommands defaults (#45)
Move static power off dialog from jinja2 template to js (#46)
Change power off dialog message
Add invert and pull-up/down options for Sensing (#39)
Add support for sensing via system commands