Remove virtualfish submodule
Squashed 'custom/plugins/virtualfish/' content from commit 2947633

git-subtree-dir: custom/plugins/virtualfish
git-subtree-split: 2947633f5843490ec2cf80e666ccca9f1271762f
Merge commit 'd8791e368bd61328e1741bda3209410fdeb9cd2f' as 'custom/plugins/virtualfish'
Add svim alias to aliases