Added functions to get labels from todoist and assign attributes to habit if applicable
Added check to whether or not update should be run on a particular item for if the todoist labels have changed
Update task with proper attribute if tagged with an attribute label
Updated readme file with info about how to use filters to assign the attribute of the skill
Clarified item in readme
Added fix for when old is undefined
Merge pull request #7 from crookedneighbor/attributes

Assign Skill Attribute with Todoist Labels