updated __version__

components.plotting:
- subplot_imshow(): changes color map to 'gray' (fixes color inversion)

components.Tie_Point_Grid.Tie_Point_Grid:
- plot_shift_distribution(): revised legend appearance

updated __version__

components.CoReg.COREG:
- revised _find_side_maximum()
- _calc_shifted_cross_power_spectrum(): fix for not rejecting input image size of (0,0)

updated __version__

components.Tie_Point_Grid.Tie_Point_Grid:
- plot_shift_distribution(): added RMSE in pixel units; reversed legend order

updated __version__

components.Tie_Points_Grid.Tie_Point_Grid:
- plot_shift_distribution() / calc_rmse(): catched exception in case tie point filter level is 0

updated __version__

Conflicts:
	__init__.py

components.CoReg.COREG:
- __init__(): now accepts also integer values as resampling techniques

components.DeShifter:
- revised _dict_rspAlg_rsp_Int

coreg_cmd:
- added new parameters for adjusting resampling technique

updated __version__

components.CoReg.COREG:
- _calc_shifted_cross_power_spectrum(): banned numpy warning
- revised _get_grossly_deshifted_images()
- calculate_spatial_shifts(): added some more comments

- updated __version__

components.CoReg.COREG:
- changed default value of window size to 256 px

components.plotting:
- plot functions now return figure instances

components.Tie_Point_Grid.Tie_Point_Refiner:
- _reliability_thresholding(): changed default of min_reliability to 60

coreg_cmd: changed default of '-ws' to 256

updated __version__

updated __version__