I mapped helm-make-projectile to "m" within the helm-command-map, which
replaced helm-man-woman which, so let's make that available as "M"
within the helm-command-map instead.
Smex has not been updated since late 2015. Amx was originally a fork of
smex, but as since evolved much further into it's own thing.
Among other things is supports other completing backends, and ivy with
it's fuzzy matching feels rather nice. I'm keeping ido-mode for
everything else, but specifically for M-x I'll give ivy a try.
As I don't see myself using tabs all the time, but potentially wanting
access to them every now and then, I need to manually trigger one of the
tab / tab-group switching keybindings, or M-x centaur-tabs-mode to load
and enable it.
Also create a new siren-display-line-numbers module and function that's
responsible for turning on the display of line numbers. Future changes
to how line numbers are displayed can now be done in a single place.
There are a few major modes which are not based on prog-mode, that I
want to behave like prog-mode. Previously each did nearly all the same
setup that's done via the prog-mode hooks. Now instead let's actually
run runs the hooks for prog-mode.
