Fix problems with multiple oneofs in same message (#229)
Zero-valued extension fields were mistakenly ignored by encoder (#242)
Multiple fixes related to proto3 mode (#242, #245, #247, #249)
Fix problems with multiple oneofs in same message (#229)
Zero-valued extension fields were mistakenly ignored by encoder (#242)
Multiple fixes related to proto3 mode (#242, #245, #247, #249)