Updated submodule
Merge branch 'master' of https://github.com/wellcomelibrary/player
updated tests
Merge branch 'master' of github.com:wellcomelibrary/player
updated submodule
updated examples
expand treenodes
Merge branch 'master' of https://github.com/wellcomelibrary/player
Merge branch 'master' into wellcome
updated submodule