Update the plugins managment. Add the function 'omz-plugin' (inspired from bash-it)

plugins/cask/cask.plugin.zsh

@@ -1,26 +0,0 @@
-() {
-  emulate -L zsh
-
-  if ! (( $+commands[cask] )); then
-    print "zsh cask plugin: cask command not found" >&2
-    return
-  fi
-
-  cask_base=${commands[cask]:h:h}
-
-  # Plain cask installation location (for Cask 0.7.2 and earlier)
-  comp_files=($cask_base/etc/cask_completion.zsh)
-
-  # Mac Homebrew installs the completion in a different location
-  if (( $+commands[brew] )); then
-    comp_files+=($(brew --prefix)/share/zsh/site-functions/cask_completion.zsh)
-  fi
-
-  # Load first found file
-  for f in $comp_files; do
-    if [[ -f "$f" ]]; then
-      source "$f"
-      break
-    fi
-  done
-}