Changelog

This doesn't go back very far. Do we want to?

Should we start using versions, and if so, what version would we be at?

closes #66
Add note about Spotlight double modify events to README

#62
more Changelog

still working my way back through history
this changelog goes all the way back
my attempt to add versions
link issues mentioned in Changelog
add some new lines
link issues in README
Merge pull request #73 from gophertown/spotlight

Add note about Spotlight double modify events to README
Merge pull request #72 from gophertown/changelog

Changelog
Update CHANGELOG.md