build: fixed git hash in makedist script

examples: manet routing examples feature is turned on by default.

doc: updated version number + whatsnew

productizing: version updated

build: updated version number + whatsnew

examples: added description for the rate control algorhitm example.

doc: tagged changelogs

doc: tagged ChangeLogs + updated What's New

doc: added a bit description for packetdrill

emulation: removed unused member variables.