fix regular expression date matching bug

A bug with the matching for dates existed that is now resolved with
updated regex logic.

add keywords, remove keywords, enhanced keywords

v0.3.2

v0.3.1

v0.3.0

fixed #5; v0.2.6

v0.2.5

v0.2.4

v0.2.1; added keywords

Merge pull request #3 from tkdan235/dupes

Delete Dupes