Parametric Piano Hinge V2

This is the second iteration of this: http://www.thingiverse.com/thing:1340098
You should use this file instead of the other one.

Edit: 02/20:
- Added holes customization options, you can define their diameter and their offset for better positioning.
- Now you have different parameters for the two different tabs, so the left and right tab don't have to be the same length.

Edit: 02/14:
Several things changed:
- Easier to customize / harder to generate broken files
- Changed the inte