Updated changelog, tag v1.0

Tag v0.4.1

Tag v0.4

Tag v0.2.0, which moves elli_access_log into a separate repository at…

… github.com/wooga/elli_access_log.

Tag v0.1.3

Roll 0.1.2

Tag 0.1.1 with the breaking change from 1ed76c0

Merge branch 'master' of github.com:knutin/elli