Better to set it precisely where it is needed. This also ensures that running
cog from the Makefile will get the right results.

un-executed, white space, time stamp.

By avoiding writing metadata that differs but doesn't change the data,
we get a higher hitrate on the hash-checking when combining.

Use --debug=process to include these details for debugging.

* refactoring normal reporting text output

* implemented markdown feature from #1418

* minor changes

* fixed text output

* fixed precision for text and markdown report format

* minor changes

* finished testing for markdown format feature

* fixed testing outside test_summary.py

* removed fixed-length widespace padding for tests

* removed whitespaces

* refactoring, fixing  docs, rewriting cmd args

* fixing code quality

* implementing requested changes

* doc fix

* test: add another test of correct report formatting

* fixed precision printing test

* style: adjust the formatting

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

I didn't understand that fnmatch considers the entire string to be a
filename, even if it has slashes in it. This led to incorrect matching.
Now we use our own implementation of glob matching to get the correct
behavior.