Stabilized status report

1. The status is now not deleted from cache immediately when it expires, but it waits to be renewed, this shows older data for a while but lets the monitoring not report a failure - because there is no failure really, we are just waiting for a new check.

2. Timestamps, idents - added possibility to monitor detailed information by using idents. For example a monitoring service can now check if "myServer_Health=true" is present, if not, then report that the health check is having a problem, not anything else. There is also a "myServer_Summary=True" that allows to check overall status.

Fixed health check endpoints most of the time showing that the data is not warmed up

Fixed: "Status not ready, waiting for check to be performed..." was showing all the time, because of invalid cache configuration. Now the cache max life time = (loop sleep time - 1)

PyPI release

v1.0.1

Added valid deployment credentials

First release

• Stabilized rescue commands execution
• Added Slack/Mattermost notifications
• Covered a lot of code with unit tests
• Attached Travis-CI builds
• Fixed docker container build