feat(all): Add `updated_at` to all entities (5e-bits#763)

feat(2014): Start versioning (5e-bits#762)

* feat(2014): Start versioning

* fix(script): Upload multiple table versions

* fix(db): Play nicely with collections index

fix(ci): Set correct repo url

feat(monsters): Add more monster images (5e-bits#715)

fix(magic-item): Add image to the correct magic item (5e-bits#714)

feat(magic-items): Add first magic item image (5e-bits#636)

feat(monsters): Add images for ancient, adult, and young dragons (5e-…

…bits#635)

fix(monsters): Change burrow speed for young-blue-dragon to 20 ft. (f…

…rom 40 ft.) (5e-bits#632)

Change burrow speed for young-blue-dragon to 20 ft. (from 40 ft.)

As compared to 5E Monster Manual; also Ancient and Adult Blue Dragon burrow speed is 40ft and 30ft respectively

fix(5e-SRD-Monsters.json): small inconsistencies (5e-bits#598)

* Fix (5e-SRD-Monsters.json)

Fixes various small inconsistencies (probably introduced by character recognition).

* Update 5e-SRD-Monsters.json

fix: Normalize resistance/immunity/vulnerability strings (5e-bits#561)

* Normalize resistance/immunity/vulnerability strings

* Normalize non-silver weapon immunities