* Remove some tests we no longer need
* Delete blocks of redundant code
* Compress some tests together to simplify them
* Remove a little code for ancient linter versions
* Escape more executables we didn't escape before
* Rename a deno option that didn't match our conventions
* Add fsc as a Scala linter
* Pull reused code into `autoload/ale/` directory
* Include fsc into the README
* Add unit test for testing the scala handler
* Add unit test for scala's fsc linter
* Rename scala unit tests for clarity
* Fix typo in README
* Fix typos in doc/ale.txt
* Fix author headline
* Put methods for fsc commands back into fsc.vim
* Move command_callback tests to correct location
* Rewrite handler test so it actually tests handler
* Clarify description of test in test_scala_handler