* makes changes to almost all main repo files to be in accordance with .editorconfig
* some files in "test\fixtures\..." were left alone to avoid breaking tests
* NOTE: whitespace changes *only* (`git diff -b` shows no changes)
There's a new julia-installer.exe install file which made extract_dir no longer usable. It's a Nullsoft Installation package so I updated the manifest with the installer and uninstaller files as well as the command line arguments to go with each.