KSP-CFG mode

A major-mode for editing Kerbal Space Program part (and other things) config files in Emacs.

Status

Syntactic lex with good (well, enthusiastic and correct if not tasteful) highlighting
Intelligent automatic indentation
Context-sensitive advice in the minibuffer

Ack 2019
Bump version
Add emacs 24 req for lexical-binding (still optional)
Appease checkdoc for symbols in docstrings
Update cfg node keywords for 1.6.1
Fix word/symbol syntax table entries for better word motion
Prefer forward-line over (end-of-line) (forward-char) for better evil-mode compatibility
Switch to cl-symbol-macrolet for end-of-indent-region checks for safer handling of over indented region at end-of-buffer.
Reformat with indent-tabs-mode: nil because I can.
Adjust (looking-back) use for modern Emacs 25.1+ 2-3 argument looking-back; should remain compatible with either.

Set up travis-ci testing across various Emacs releases.
Support more ModuleManager syntaxes; variables, regexps, and node-indexing aren't implemented.
Refactor context help; a more flexible means of inserting new help tips on a per-module and per-keyword basis would help.
Better context help for common node-keys and modules.