GitLab

Use `push' and replace `regi-pos' by equivalents.

(sc-emacs-features): Remove.  Use better tests instead.
(sc-minor-mode): Use define-minor-mode.
(sc-mode-string, sc-set-mode-string): Remove.
Use a better modeline expression instead.
(sc-completing-read, sc-read-string, sc-submatch, sc-member)
(sc-string-text): Remove those compatibility functions.