[CHANGELOG] Prepare for 1.4.0-beta.1
[CHANGELOG] Prepare for 1.4.0-beta.1

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