bin/get-amy.py: grab events with any of the tags
bin/get-amy.py: grab events with any of the tags

Extend scripts functionality to accept either --tags-any or --tags-all
parameters, the former used to grab events with any of the specified
tags (at least one required), and the latter used to grab events that
have all of the specified tags.

pbanaszkiewicz/website,rgaiacs/swc-website,swcarpentry/website,gvwilson/website,swcarpentry/website,gvwilson/website,gvwilson/website,swcarpentry/website,JasonJWilliamsNY/website,pbanaszkiewicz/website,pbanaszkiewicz/website,k8hertweck/website,pbanaszkiewicz/website,JasonJWilliamsNY/website,ErinBecker/website,k8hertweck/website,gvwilson/website,gvwilson/website,swcarpentry/website,rgaiacs/swc-website,rgaiacs/swc-website,JasonJWilliamsNY/website,ErinBecker/website,ErinBecker/website,ErinBecker/website,k8hertweck/website,JasonJWilliamsNY/website,rgaiacs/swc-website,JasonJWilliamsNY/website,k8hertweck/website,k8hertweck/website,pbanaszkiewicz/website,ErinBecker/website,rgaiacs/swc-website,swcarpentry/website