General Fixes (#36)

Fixed issue where when opening a second terminal it'd open in the same
tmux session making it so that it's just a mirror of the first terminal.
Closing that terminal would close all terminals. Also added an alias to
vim which calls nvim

Reviewed-on: #36

zsh/dot-zshrc

@@ -17,6 +17,9 @@ alias cat="bat"
 # Alias cd to z for zoxide
 alias cd="z"
 
+# Alias vim to nvim
+alias vim="nvim"
+
 ############### END ALIASES ###############
 
 ############### BEGIN EXPORTS #############