Changes for jng 1.0 -> 2.0 include:
+ Add version ident
+ Remove extraneous line in LICENSE section
+ Add -h to usage statements
+ Bump copyright
+ Add experimental MSS clamping
+ Add support for ng_bridge(4) NGM_BRIDGE_GET_STATS (getstats)
+ Add JSON formatted ng_bridge(4) statistics (see above)
+ ...
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