On the Raspberry Pi 4, using latest versions of cppcheck
and pylint, a few more minor fixes were needed for eliminating
warnings.
Also had to soften a tolerance for the Kotlin unit tests.
Used IntelliJ IDEA's linter to perform code cleanup.
There were unused variables, `var` that could be replaced with `val`,
and other minor code style issues.
While doing this, I also discovered that a lot of documentation
links were broken. The fix is to stop intenting the text after
a `@param`.
This is just to get build errors to go away.
Will have to come back and flesh out all of the documentation
once I start working on the C# documentation generator.
