Merge pull request #4 from sightmachine/develop

Develop
Update pip.requirements
Merge pull request #583 from demaagdk/develop

fix bug handling limit when None
change image export to use human readable names
Merge pull request #584 from demaagdk/develop

Develop
Merge branch 'develop' of github.com:oostendo/SimpleSeer into develop

Conflicts:
	SimpleSeer/commands/core_commands.py
fix head line
Merge pull request #585 from oostendo/develop

Develop
Merge pull request #587 from demaagdk/develop

Develop
Merge pull request #588 from demaagdk/develop

measurement tolerances can pull error messages from feature
Fixed alerts by adding a callback stack so that the animation glitching when adding an item does not occur
Merge branch 'develop' of github.com:sightmachine/SimpleSeer into develop
Merge pull request #589 from brooksryba/develop

Develop
Merge pull request #590 from demaagdk/develop

Improved backup script
Merge pull request #591 from demaagdk/develop

handle cases when updatetime not set
Merge pull request #592 from demaagdk/develop

handle cases when updatetime not set
Merge pull request #593 from demaagdk/develop

Develop
flush cache when importing meta