Overhaul of the regression testing module. Now introduces regression testing via an example of a manual test to illustrate the idea and the fallbacks of doing it manually. Then introduces Snaptol to automate the file management process, as well as introduce the capability of tolerances on comparisons involving floating point numbers. Introduce 3 exercises of increasing difficulty, along with solutions. · ResearchCodingClub/python-testing-for-research@12dfef8

Job	Run time
Record PR number	6s
Build markdown source files if valid	1m 13s
	1m 19s

6s

1m 13s

1m 19s

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