Edera

* Added support for Python 3.7
* Implemented buffering on monitoring agents
* Fixed all known issues with `Proxy`
* Replaced pickling with custom interpreter-independent serialization
* Started to ignore monitor-related errors
* Limited tracebacks in the monitoring UI up to one last call
* Refactored `MonitoringSnapshot` (separated its core from task payloads)
* Made snapshot updates more reliable
* Added more debug logging

* Re-fixed URL highlighting in the monitoring UI

* Implemented `EmbeddedStorage` and simplified the `Storage` interface
* Fixed a couple of minor issues with the monitoring UI
* Slightly improved performance of `MongoStorage`
* Reduced the size of monitoring data
* Introduced static daemon modules and static timestamps for auto-testing

* Reduced the lag of the first execution in `Daemon` (4)
* Updated the monitoring UI (20)
* Fixed the concurrent access problem in `SQLiteStorage` (14)
* Enabled PyPy 2.7/3.5 support
* Fixed a premature completion bug in `Daemon`

* Updated dependencies to the latest major versions

* Made `Daemon` handle SIGTERM correctly
* Fixed the snapshot updates dropping procedure in `MonitorWatcher`