Add load_lbp
Fix SDRAM Timings
Fix Keypoints example
Fix FAST ROI

* Find all KPs then discard based on ROI (for small ROIs)
Update binary
Fix GPIO pin mapping
Had to modify url for micropython due to permission denied errors, following various advice on stackexchange; now works
Fix GPIO pin defs
Add priority, sub_priority to gpio_init_exti
Use gpio module to reg interrupts
Merge branch 'master' of https://github.com/iabdalkader/openmv
reverted to git url to try out
Use frombuffer

* Issue #8
Update for PIL use tostring