workaround pylons/pyramid#1428
closes #42. Note: we do not upgrade the css, to make sure our customizations are not overwritten.
bumbed version number
Merge branch 'release/0.19.2' into develop
added option to choose default base layer
restrict dicts to known keys
Merge branch 'develop' of github.com:clld/clld into develop
refactored to not interfere with test coverage
fleshed out llod support