Adds ends and starts functions and tests to StringUtils.
Fixes Exception logging test to fail.
Makes testing formatting exceptions even less specific.
Merge branch 'master' into feature/chromelogger

* master:
  Makes testing formatting exceptions even less specific.
  Fixes Exception logging test to fail.
  Adds ends and starts functions and tests to StringUtils.

Conflicts:
	tests/logger/formatters/TestLineFormatter.php