Lot of manifests are using github tags to find the latest version the
url's and regex is mostly the same.
`checkver` now can also be the string "github" if the `homepage` links
to the github repo
If `homepage` is not the repo `{"checkver": "github":
"https://github.com/user/repo"}` can be used
* remove BOM from all repo files that contain one
* changes all files to utf-8 (specifically, utf-8 *without* BOM)
* improves compliance with ".editorconfig"
.# Discussion
This is an example of the semi-invisible changes which can creep into patches
via various editors. Any such changes are *very* difficult to figure out from
a diff output and just add visual noise to commits. Hence, ".editorconfig" (added
in a previous commit) is used to minimize this kind of confusing patch noise.
* 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)
