Support for Additional Filenames Beyond Current regex

[ZaydH]

Based on tmux.vim, the plugin autoloads when the filename satisfies the regex {.,}tmux*.conf (please correct me if I am wrong).

Some tmux tools (e.g., oh-my-tmux) use alternate naming conventions for .tmux.conf such as a user modified .tmux.conf.local. Would you be open to supporting alternate naming conventions? For example, a variable in a user's .vimrc could propose an additonal/alternate regex (I do not know if that is supported in vimscript -- more a general proposal).