Update to 1.4
Added "newtag.longtag" permission to bypass maximum tag length when setting tags.
Added a tag placeholder, can be used to move the tag to a custom place in your chat formatting. Simply add the placeholder into your format plugin's configuration.
Added permission based tags, new in tags.yml is a "permission_tags" header. A tag listed there will be shown on the player with the "newtag.ptag.<tag>" permission.
Added enable_tab_list_tag configuration option to show tags in the tab list
 - Configure tab list tag format with tab_list_tag_format configuration.