Add ChangeLog.md entries to get caught up
Add ChangeLog.md entries to get caught up

**Why you made the change**

I added these ChangeLog.md entries so that people can have a summary of
the changes that have happened between the various different versions.

**How the change addresses the need**

Adding these entries helps clearly let people know that two significant
changes were made. One to split the Feature model into two models
Feature & Toggle and the other to communicate that we have rearchitected
togls to support repositories and datastores.

uptech/togls,codebreakdown/togls,uptech/togls,codebreakdown/togls