It'd be really epic if this extension will provide the following features:
Rename a tag for all URLs or only selected ones by existing tags
Merge one or multiple tags in a new one (e.g. the tags "advanced" and "analytics" will be merged into the only one tag "advancedanalytics") for all URLs or only selected ones by existing tags
Delete a specific tag for all URLs or only selected ones by existing tags
Add a new tag only for all URLs or only selected ones by existing tags
It'd be really epic if this extension will provide the following features: