changelog: docs for 1.5.x related changes
2018-xx-xx: v0.0.7
- TODO
+ 1.5.x protobuf support
+ operations: new helpers for additional offer operations
+ scheduler/calls: new helpers for ack offer op update AND reconcile offer op
+ extras/scheduler: rule that acks offer op updates
+ master: helpers for teardown and mark-agent-gone
+ additional test cases for new reservation validation
+ operations: support reservation refinements
2018-03-12: v0.0.6
1.4.x protobuf support
