Allows for separate angles with Intake and Exhaust plus removed the print statements from the interrupt callback.

[ricallinson]

Based on the first PR and it's comments I put together a this one.

Changes;

• Allowing for separate angles with Intake and Exhaust.
• Removed print statements from the interrupt callback and placed them in loop().
• Removed as many runtime calculations as I could work out from the code.

I'm so ready to start printing the parts to make this for my CycleKart!

[ricallinson]

Closing this as I'm going to submit a new PR with a mapping table.