v2.1.1

Minor changes:
Fixed conda environment file
Use absolute values for scale check
More consistent padding

v2.1.0

Fixed handling of large images
More checks for validaity of transformation matrices
Fixes to conda environment

v2.0.0

Added pyramid based registration
Metric - normalized mutual information
Multiple iterations per pyramid level
Conda environment file

Initial release

v1.0.0

added citation file