This superseeds https://twitch.uservoice.com/forums/310213-developers/suggestions/45445489-please-provide-an-api-to-manage-donations

which covers kitchen sink

Please provide an API that allows authorised parties to increase/modify the goal on the channel.

The primary reason for this is to allow a moderator to update the goal whilst the streamer is busy streaming/reading donations/playing the game.

This could also be used for tiered targetting/target goals in an automated fashion "hey chat we met goal one of 100 dollars, lets get to goal two of 1000 dollars" and the control bot can auto update the goal when the first goal is met