Update changelog info for release - v1.2.0
## In development
+
+## v1.2.0 - April 14, 2020
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- Updates for 0.6.0 Compatibility [#317](https://github.com/nre-learning/nrelabs-curriculum/pull/317)
- Add stage4 for Git lesson: remotes [#322](https://github.com/nre-learning/nrelabs-curriculum/pull/322)
