Pcof

Changelog

- Add function bandwidth_converter

Changelog

- Add function time_unit_conversion
- Add function pct_change_from_x_to_y
- Add parameter flush and output on function msg
- Rename function pct_two_numbers to y_what_pct_of_x
- Move functions with dependencies to their own files (modules)
- Separate pcof module functions into different files (group by subject)

Changelog

- Add function download_file
- Add decorator retry_on_exception

Changelog

- Add decorator num_calls
- Add decorator time_elapsed
- Add decorator debug
- Adopt Black as the code formatter and enforce it on workflow

Changelog

- Add new function checksum_file
- Add readme example

First version uploaded to PYPI