FORKED: incorparated all my patches into the master fork.

https://github.com/gajus/xhprof.io/pull/56
https://github.com/gajus/xhprof.io/pull/55
https://github.com/gajus/xhprof.io/pull/52
https://github.com/gajus/xhprof.io/pull/48
https://github.com/gajus/xhprof.io/pull/44
https://github.com/gajus/xhprof.io/pull/43
https://github.com/gajus/xhprof.io/pull/42
https://github.com/gajus/xhprof.io/pull/40
https://github.com/gajus/xhprof.io/pull/38