[FEATURE] - Add reporting functionality

In GitLab by @Huite on Jul 5, 2019, 13:49

We should probably create a .report namespace. This provides a number of functions which automatically prepare these kinds of outputs. As seen above, the implementation is not particularly difficult using current methods, but it's nice to have an overview up and ready.

Step 1 is defining the methods. Step 2 is writing a function which does the analysis. Step 3 is generating a HTML report (should be trivial using modern libraries like jinja2). Step 4 could be adding an interactive component on top.

Originally posted by @Huite in #77

I was cleaning up the board and found this old, but gold, idea. Consolidating this under an issue name with clearer scope, so that we're less likely to overlook this idea.

No files, tests, or entry points are named. Start by surveying the existing methods and reporting-related functionality, then clarify the scope of the proposed .report namespace, analysis functions, HTML output, and possible interactive component. Done should be defined before implementation begins.