DOC: Update change log

Update log to reflect recent changes

DOC: Move location of stable docs

Move stable docs to root

DOC: Release 4.5

Update change log for 4.5 release

Merge pull request bashtage#128 from bashtage/fix-travis

BLD: Ensure docs are correctly built

DOC: Fix doc build errors

Fix errors related to versions strings
Revert travis package install locations

TST: Alter test environment

Use conda to install sphinx and pytest

DOC: Improve documentation for SUR

Improve SUR background documentation

RLS: Final clean up prior to release

Final documentation cleanup

DOC: Add missing css file

Add missing overrides css file

Final Doc

[skip ci]