add option for case-insensitive match in unpack
In my testing case, using data_files_glob:
*.tif did not match image file ending with ".TIF" even though it should have - as
fnmatch should be case-insensitive. I tried to change code to re.match on compiled regex.
Does this make sense @fabian.schindler or am I misunderstanding it completely? (matching file ending with .TIF on "*.tif" regex and case=false and not matching on case=true works now correctly for me.
glob_case option as a configuration.