Rename to signs.
Solver: Fix compilation.
wip.txt: Space words, re-wrap lines.
Solver: Start to re-model.
build: Add -Xfatal-warnings.
Morse: Cleanup.
Solver: Improve printing code.
Solver: Drop AnyVal, box once.
Solver: Start re-doing message extracting.
signs: Fix inline issues.
signs: Rename to term, was terminal.
Solver: Fix padTo.