Switch from submodule to subtree for external modules
Squashed '.dotfiles/external/dircolors-solarized/' content from commit 1a865cc

git-subtree-dir: .dotfiles/external/dircolors-solarized
git-subtree-split: 1a865ccdb4a9b56897f40d8db6a39659b7f84864
Merge commit '8a318ebdc0df5fd67a450f339d0d216faab5dd1c' as '.dotfiles/external/dircolors-solarized'
Squashed '.dotfiles/external/liquidprompt/' content from commit 7f54e6d

git-subtree-dir: .dotfiles/external/liquidprompt
git-subtree-split: 7f54e6dee797be5f3ae4a737475fc73bdb165fc2
Merge commit '18a638bed76ac22cbad5e87ec0d0fa92a8d5ae2b' as '.dotfiles/external/liquidprompt'
Squashed '.dotfiles/external/fontconfig-ultimate/' content from commit 4f8258b

git-subtree-dir: .dotfiles/external/fontconfig-ultimate
git-subtree-split: 4f8258b0271e71a488b0e1f2529c90d388f1dd41
Merge commit 'c7f049cacc5681fd7aac265e6469d2b941753d13' as '.dotfiles/external/fontconfig-ultimate'