It's deprecated and we want to encourage users to use the explicit
window assigners.

- add Java 11 to list of supported Java versions
- add WSL to list of unix-like environments
- updated some links to use https

This closes #7453.

This closes #5924

This closes #5760.

This closes #5497.

This reverts commit 486f7249.

Removed after the "[DISCUSS] TravisCI status on GitHub Page" discussion on
the mailing list.

This closes #3577.

This closes #3570.

This closes #2764.

Java 8 update 11 introduced a stricter bytecode verifier that leads
to failures in unit tests that use the PowerMock runner. The tests
run correctly in Java 8u51 or above.

This closes #1882

This closes #1743

This closes #841.

This closes #371

Removed Disclaimer file
Eliminated unnecessary incubating substrings
Bumped version to 0.9-SNAPSHOT

So people won't encounter and ask the same question as I did just now ;)

Author: Raymond Liu <raymond.liu@intel.com>

Closes #49 from colorant/doc and squashes the following commits:

90bf2aa [Raymond Liu] Mention that Oracle JDK 6 library will fail to build

System.exit() is no longer required after the LocalExecutor