conexus 0.2.0 released

This release adds support for IPv4 and IPv6 I/O endpoints and introduces support for unnamed pipes and file endpoints. The multicast endpoint (previously only IPv4) has been removed as a separate class and has been incorporated into the IPv4 and IPv6 UDP endpoints. TCP endpoints are now fully functional for both IPv4 and IPv6, and the address class for both IPv4 and IPv6 address has been completely overhauled.

The serial and TTY I/O classes have also been significantly changed and offer a nearly complete interface to POSIX terminals including line speed control, parity checking control, et. al.

Also, the Gtkmm widgets have been split into their own library, conexusmm. Thus, the conexus library no longer has a dependency on either gtkmm or libhal.