Change type of pop variable from float to Py_ssize_t
Clean Readme
Wrap lines
Remove duplicate contiguous conversion
Fix, improve and extend histogram test cases
Do not ignore exceptions in core functions
Fix, improve and extend test cases
Use single file for test cases and rename file
Change data type of pop variable to float
Merge pull request #1 from ahojnnes/rank-filters

Rank filters
local Otsu returns now the threshold values
fix: plt.show() removed in doc
remove local demo from git
add new tests
fix: check pop==0 for some kernels
add: test entropy 8- & 16-bit
add: test otsu
add: local Otsu synthetic example
fix: local otsu doc
Fix typos and spelling of readme