Multiple grid sizes and curve draw tools

[gurulogic]

It would be great if it were possible to work within one grid size and then be able to switch to another grid size without everything in the interface snapping to the new grid size (usually very messy)

Also some curve drawing tools/modifiers would be handy..ie: line, curve, modify curve,move up, move down, mirror etc...

[senso]

@grid size:not so easy to implement. Regardless to the implementation difficulty, I'm not sure I'll implement it some day.
@drawing tools: I'll improve the interface builder with stuffs like that slowly but surely !