Strip user input, except for delimiters, in admin mode
Repeat question instead of quitting on wrong value
Refactor non empty source code for edit/drop mode
Better error display when key failure on getLocation
With __contains__, for key in self is enough
Avoid KeyError with add_lines and from_keys on visualize
Use set/get instead of using _things
Some renaming in variables
Move distance method with the rest of distance stuff
Separate updateFields method
Use updateFields in set, disable update_fields as default (quicker)
Faster setFromDict implementation
_things does not have to be directly used outside of set/get/delete
Fix concatenate type bug
Bump version
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