ModelingToolkit: Different ways to access array of variables

I see that these branches are merged now @ChrisRackauckas.

You also mentioned in this link, Sub plus (₊) instead of dot in the dot notation in equations displayed by ModelingToolkit - #4 by zdenek_hurak, that these changed were going to be released ASAP. Are these changes already out?

Is there a way in Julia to get notifications of releases/changes in particular packages?