Add some updates to fish shell

fish/.config/fish/config.fish

@@ -1,5 +1,6 @@
 source ~/.asdf/asdf.fish
 set -gx PATH ~/.cargo/bin $PATH
+set -gx PATH ~/.bin $PATH
 set -gx PATH ~/.emacs.d/bin $PATH
 set -gx PATH ~/.fzf/bin $PATH
 set -gx PATH ~/.local/bin $PATH

fish/.config/fish/functions/changepaper.fish

@@ -1,3 +0,0 @@
-function changepaper
-    ~/.config/systemd/user/changepaper.sh
-end

fish/.config/fish/functions/checkmail.fish

@@ -1,4 +0,0 @@
-function checkmail
-	mbsync -a
-	notmuch new
-end