FixedPoint is now a LogicStructure with a Populator

[desmonddak]

Description & Motivation

We wanted FixedPoint to be a LogicStructure and to follow the new patterns for FloatingPoint in particular the populator pattern.

Related Issue(s)

#184

Testing

Ran existing Fixed point tests after refactoring to change both FixedPoint and FixedPointValue.

Backwards-compatibility

Is this a breaking change that will not be backwards-compatible? If yes, how so?

No.

Documentation

Does the change require any updates to documentation? If so, where? Are they included?

These are internals. There may be a reference in the documentation about FixedPoint being a Logic which will need updating.

[desmonddak]

What is the technique for linking issues. I add '# to my starting comment, but then I notice you later 'link' the issue.

[mkorbel1]

What is the technique for linking issues. I add '# to my starting comment, but then I notice you later 'link' the issue.

There's some keywords, e.g. you can put the word "fix" before them

https://docs.github.com/en/get-started/writing-on-github/working-with-advanced-formatting/using-keywords-in-issues-and-pull-requests#linking-a-pull-request-to-an-issue