There are two Fragmentions plugins available that might be included in the IndieWeb plugin:

Christiaan Conover:
https://wordpress.org/plugins/wp-fragmention/
https://github.com/cconover/wp-fragmention
Luis Rodriguez:
https://wordpress.org/plugins/fragmentions/
https://github.com/goblindegook/Fragmentions/

At present Conover's has 20+ installations and was written first while Luis's has 0 installs,but is more recently updated. Both seem to work on my site reasonably well, though someone more experienced than I may have an opinion on which is "better" from a coding standpoint.