- Switch from highlight-indentation package to highlight-indent-guides.
- Activate visual indentation in a prog-mode hook, rather than doing
within each individual major mode. It was already done within all
major modes based on prog-mode anyway.
- Add new siren-display-indetation module and function as a central way
to enable visual indetation guides. This makes switching the
underlying package at some point in the future much easier.
I mostly use C-x C-m instead of M-x as I for some reason find it less
annoying to type. I really like helm-command's helm-M-x function, but I
find slightly too slow and slightly too intrusive than smex.
Hence I'm switching back my main keybinding to smex, but still leaving
helm-M-x bound to the M-x keybinding I use very rarely, just so I can
still access it when I need to.
