Update ChromePhp to version 4.0.0

- Update to use new X-ChromeLogger-Data header
- Remove limit to number of log statements
    you can now call ChromePhp::log('foo', 'bar', 123, 'etc.')
- Do away with labels since they can just be statements
- Get rid of backtraces for groupStart, groupEnd, and groupCollapsed

Note that this update has a backwards incompatible change.
You can no longer use the third argument of the log function to
specify the log type like
ChromePhp::log('label', 'value', ChromePhp::WARN)