Everything was changed to rates rather than units of time. Also, the functionality was changed to mimic that of 1.9 PGM. Here is a quick run-down of what each attribute defines:

recovery-rate: Point recovers to its current state. Applies when the point owner is dominant or when a non-capturing team is dominant. A team must be dominant for this to take effect.

decay-rate: Point "decays" to its current state. Applies when nobody is dominating the point (zero players on point or lead = 0)

owned-decay-rate: Point decays from captured to neutral. Applies when nobody is dominating the point, same as decay.

owned-decay-rate takes precedent over decay-rate. So, if both have defined values and nobody is dominating the point, the point will decay towards neutral rather than "decaying" towards fully captured.

Also, here is an explanation of what rate implies: if time to capture is 10 seconds, and the owned-decay-rate is 2, then it will decay to neutral in 5 seconds.

Also worth noting, most of the code here was not my own, I copied a lot of it from the 1.9 PGM codebase with some minor adjustments.

Update: just added Pablo's changes, and tested on lots of cp maps. Existing maps work correctly and the new features work correctly as well 😄.