remove thumb-interwork - doesn't do anything anyway
csv docs - fix #411
Fix 1v70 regression where Pin was cast to int when writing to a variable
arduino compile tweaks
DFU comment
Allow I2C repeated start (fixes some odd I2C devices, fix #390) - not tested as I have no devices to try
refactoring - move iterators to their own file
big refactor - merge Array and Object Iterators, as they do the same thing
Refactoring to use iterators wherever possible
Add avr supporting files
Modify makefile for avr nightly (4.8.1) path changes, and --relax unavailability