Merge pull request #17 from Trott/multiple-titles

allow multiple titles for a release
allow artists to go by more than one name
Merge pull request #18 from Trott/artist-names

allow artists to go by more than one name
allow individuals to have more than one name
Merge pull request #19 from Trott/individual-aliases

allow individuals to have more than one name
Merge branch 'master' into multiple-titles