Updates spacemacs.
Updates spacemacs.

Updates spacemacs config (mostly) based on changes from the diff of the
spacemacs template.

- Adds additional spacing
- Updates pdumpe exec path
  - Able to get this to work after running `brew link emacs-plus --overwrite`
- Adds theme-megapack
  - I was trying to find a theme someone recommended, and decided it doesn't
  hurt to keep it around

tmr08c/dotfiles,tmr08c/dotfiles