Add link to coverband [ciskip]
It appears json travis hack is not productive anymore...

See https://travis-ci.org/colszowka/simplecov/jobs/15645387
Remove 1.8.7, 1.9.2, ree; add 2.1.0 to travis build matrix
Remove remaining 1.8-modes from build matrix.
Added notice about #281
Merge branch 'master' into fix-segfaults