Working directories are now set seperately from the commands so they
can later be swapped out when running linters over projects is
supported, and also better support filename mapping for running linters
on other machines in future.
* The project style linter now runs while you type.
* Now the scripts for checking the project require blank lines.
* Many style issues have been found and fixed.
* Add kotlin languageserver linter definition
* Added kotlin languageserver references in docs, fix missing !! on other linters
* Added Vader tests for root path detection in Kotlin Language Server
* Add ktlint support (without formatting) for kotlin filetype
* Fix code style and refactor to use ALE utility functions (GetMatches)
* Remove options for configuration file
* Refactor: Rename exec variable and use ale#Set for variable configuration
