iocore: envmsg fields order

Group together dst and dport, src and sport -- so they can be
interpreted as two 8-bytes fields also.

+ update docs.
version 0.2.2
iocore: register() shortcut
broker: unmasq() in forward
tests: fix proxy cases

+ fix release routine
setup.py.in: fix bundle

Bug-Url: https://github.com/svinota/pyroute2/issues/28
version 0.2.3

Errata version bump after the bundle issue

Bug-Url: https://github.com/svinota/pyroute2/issues/28
python3 compatibility issues
version 0.2.4
Makefile: exclude docs from the flake8 check

+ make check: deprecate target
gitignore update
iocore: on-demand AddrPool expansion