3.6 support for A B and C fourth axis configurable
Changed options tab name from Main to General
Fixed bug 53 truncation was causing error from grbl due to not adding the linefeed to the truncation count calc
Corrected link in README
3.6 French translation file added
More tweaks for French translation including more space on options tab
for wording.
Save the restoreabsolute setting on toggle

The restoreabsolute setting currently only saves if you happen to open
the options dialog; instead, save it whenever it changes.
add various files to .gitignore

Add these to .gitignore:
	GrblController
	*.o
	moc_*.cpp
	qrc_*.cpp
	*.stash
Save jog step size

Save the user-selected step size
Undo the extra save of absoloute-after-jog checkbox
Start of visualization of grbl status

- Little widgets that highlight the grbl status (abs/rel mode, mm/in
units)
- Will extend later to more items
- Fixes to previous cockup with the jog in -ve direction
Add spindle state icon

- add icon showing spindle state
- add tooltips for the state icons
- hunting for the slow sending of commands (esp. when jogging), added
and tweaked some diagnostic output
- refactored the grbl state parser and simplified the incorrect
measurements logic
- cosmetic formatting fixes
- reduced some sleep times, seems to help jog performance
- added coolant icon