[CHANGELOG] Update for 1.1.0-beta.4
[CHANGELOG] Update for 1.1.0-beta.4

artsy/eigen,artsy/eigen,artsy/emission,artsy/emission,artsy/eigen,artsy/emission,artsy/eigen,artsy/emission,artsy/eigen,artsy/eigen,artsy/emission,artsy/emission,artsy/emission,artsy/eigen