Added function to force images to grayscale
Padding an image uses float32 instead of float64 to save memory
Be more agressive about deleting variables in TestOneAngle function which can be invoked in parallel
Merge branch 'origin/master'

Conflicts:
	nornir_imageregistration/core.py
Added approximately equal function to core
Autoformatting by eclipse
Merge branch 'master'
fixed references to external modules
Agressively delete arrays during FFT Phase correlation
Use rfft2 instead of fft2 since we have real input.
Fix reference to external modules
Added module for common operations on tiles
Eclipse code formatter
Refine the angle alignment once the approximate angle is found.
Remove brute alignment tasks as they complete
Be more aggressive about freeing memory
organized imports
Remove unused file
Add support for using cluster to assemble tiles
Organize imports via Eclipse Pydev
Rename function from TestOneAngle to ScoreOneAngle
Code formatting by Pydev
Renamed 'io' package to 'files' to prevent conflicts
Fixed calculation to size to next power of two
Added debugging feature to stos_brute
Version bump for renaming package