Automatically fix simple problems

[TrueWill]

Emulate eslint --fix for certain classes of warnings (small/simple changes). (Larger changes could be handled by a separate tool; a codemod to migrate projects to new templates, etc.)

For example:
POM: <type> not removed (re-run with "--fix type" to fix)

Possibly XSLT?

(From @bterryUFG and @cjnickel )

[TrueWill]

Note: One thing we found was that xml2js is not a good choice for editing XML. It appears to drop comments, for instance.