This add testing on PHP 7.0 (nightly build). The test is added as an
allowed failure for now. but it can be useful to keep an eye on it just
in case we do something that won't work in PHP 7.

& make phpunit dev dependency explicit.

Updated the composer.lock to install satooshi/php-coveralls

Add .coveralls.yml to stop errors.

Added coverage_clover pointing to correct location.

json_path now... anything to get bin/vendor/coveralls to actually execute!

Only push coverage reports for a single version of PHP

Add whitelist + exclusion files to coverage.

Reduce code coverage % by processing all files :-)

Beware adding additional directories for tests without setting up config + mocking the rest of the environment.

Don't show uncovered files.

Attempt upload for all PHP versions. Is this stacktrace always generated?

Return to "true" for uncovered files.

There is a path problem somewhere!