doc: related projects - close #313

doc: updated copyright

pipe: use UV_PIPE_NO_TRUNCATE as needed

loop: metrics

updated doxy file

update to libuv 1.44.1

update to libuv v1.43 (it just works fortunately)

Add support for uv_try_write2

Updated to libuv 1.41 (close #237).

uv_socketpair and uv_pipe aren't explicitly eported via uwv.

Merge pull request #224 from stefanofiorentino/experimental

refactor the `test' includes