This pops up on travis by default:
$ pod --version
WARNING: CocoaPods requires your terminal to be using UTF-8 encoding.
See https://github.com/CocoaPods/guides.cocoapods.org/issues/26 for
we could check if we're in a travis environment and advise them to add this:
- export LANG=en_US.UTF-8
Update changelog for #1704, #1840 & #1933