Ye Ol' π Shack

Grrrr. >:-[

- easier filter integration
- putting right responsibility

- Moved explicit copyright notice to a singe
  file to simplify dual-licensing

- All synchronous connections are finalized in the worker thread in order to
  reduce amount of switches between the thread-pool and event loop
- Even cancelation on socket that does not has pending events does not cause
  breaking of main event loop

- full-copy function replaced with callback that shares its object
- introduced callable object that can handle big handlers efficiently with 0 copy overhead

with user's data

- Old files cleanup

management to shared_ptr/enable_shared_from_this management

ones

format, global_config replaced with json::value

request managment
- Intruduced refounting using boost::intrusive_ptr

- Fixed collapse of locale.h with general locale.h