add method to determine newest tag. Allow for updating plugin based upon tag
fix for undefined variable
update filter to use 'pre_set_site_transient_update_themes'
use transient in check for tags, return early if no tags and work correctly if only one tag
move comment to block header
not sure this is needed
fix spacing
check for tags and abort early
update README
Merge branch 'refs/heads/feature/plugin-tags' into develop
spacing