Dump time entries to a log file.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Check for None HomeActivity

This can happen when the Sugar is shutting down, after the
Journal is closed, the active Activity becomes None.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Ignore times from failed launches

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Release 0.2.0-1

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>