Add Fantomas tool and format F# code

[LyndonGingerich]

Resolves #434

Should I examine any particular settings to minimize changes?

[LyndonGingerich]

Do we want a build tool to ensure that merged code is formatted correctly?

[TysonMN]

Do we want a build tool to ensure that merged code is formatted correctly?

I think that would be good.

Are the formatting choices of Fantomas configurable?

[LyndonGingerich]

Are the formatting choices of Fantomas configurable?

Very. https://fsprojects.github.io/fantomas/docs/end-users/Configuration.html

[rfreytag]

Had not seen Fantomas before. So, I looked at Fantomas looking for some standardization of blank line practices like skipping extra, extra lines after Modules and could not find that. Did I miss it? Since you folks like that practice you might want to customize your usage of Fantomas to include that practice.

[LyndonGingerich]

@rfreytag I don't think that Fantomas removes newlines except at the ends of files.

[LyndonGingerich]

@TysonMN Should I look into a GitHub action? It would take a while, and I don't (and probably shouldn't) have the access required to create one here.

[LyndonGingerich]

@rfreytag There is a setting for the maximum number of consecutive blank lines, but it doesn't distinguish between blank lines after modules and blank lines elsewhere.

Since you folks like that practice

What are you referencing? Was there a particular issue involving blank lines?

[marner2]

This is probably a good idea and should be merged in.

@LyndonGingerich you can modify the github actions yourself by editing the files in .github/workflows/pull_request.yml|continuous_integration.yml

[LyndonGingerich]

I've let this branch grow old. I'll make another rather than dealing with merge conflicts.