[refactor] [test] move AbortException to Exception namespace; 100% coverage on RouteAbort
[test] 100% coverage on Route\NestedRouter
[add] [test] Route\Rewrite constructor accepts rewrites array instead of normal route parameters, method getRewrites() returns them and method applyRewrites() applies them to thhe match reference
[build] run phphunit with --stderr switch
[test] coverage of Router matching Route\Abort and Route\Rewrite routes