Patch 1.13.5/API changes

Diffs
1.13.4 (34600) to 1.13.5 (34713)
 * FrameXML: https://github.com/Gethe/wow-ui-source/commit/5cf55088150934fdba9ad399574941a3460ca382
 * API resources: https://github.com/Ketho/BlizzardInterfaceResources/commit/12b063e9a05d9d3ec72931c9279194c79b44c84e

Changes

 * TOC version:
 * Reinstated Threat API and increased the combat log range in dungeons and raids - to reduce the need for addon comms
 * 4 additional backpack slots were added for Blizzard Authenticator secured accounts