Reset is_leader status on demote (patroni#777)

 Make sure demoted cluster member stops responding with code 200 on the  /master API call.

Issue a new minor release.

Fixes patroni#776

Release notes 1.4.5 (patroni#762)

bump version update release notes

Release 1.4.4 (patroni#683)

bump version and update release notes

Release 1.4.3 (patroni#635)

Bump version and update release notes

Release 1.4.2 (patroni#619)

* Bump version to 1.4.2
* Update release notes

 A few iprovements in patronictl (patroni#601)

* make switchover work with an old patroni
* exclude leader from candidates when interactively running failover

Release notes 1.4 (patroni#597)

Document  Kubernetes parameters, environment variables. Describe how Patroni uses Kubernetes.

Bump version and write release notes (patroni#560)

and implement missing unit-tests

Update releases.rst

Release 1.3.4 (patroni#515)

Fix documentation and update release notes