Add top-level exception handler to blend.
Add top-level exception handler to spread.
Add top-level exception handler to tinge.
Merge branch 'master' into issues/9

issues:#9
Fixed the travis ci badge to actually link back to travis-ci.org
Merge pull request #48 from tchaudhri/fix_travisci_build_status_link

Fixed the travis ci badge to actually link back to travis-ci.org
Merge branch 'master' into issues/23