Update Changelog for emergency 2.2.1 release

Update CHANGELOG.md for 2.2.0 release

tfenv v2.1.0

Fix the failure to correctly handle a version requested not being ins…

…talled. Handle it with the defaulted option to automatically install missing versions

A shot at v2.0.0-beta2 without use-on-install

tfenv v2.0.0-beta1

Rewrite script initialisation to cleanly handle symlinks and prep all…

… scripts for standalone

Logging (tfutils#154)

* Add all ubuntu options to travis

* Workaround bash 4.3 bug by replacing BASH_SOURCE with dirname $0

* Remove unsupported ubuntu release from travis

Logging!

Add tests for failing 0.11.15-oci case

add 0.11.15-oci case to uninstall test
Modify list-remote; add oci and make digit optional
add belt and braces alpha beta and rc tests