cmd/gb-vendor/vendor: add tests for manifest read/write
cmd/gb-vendor/vendor: add tests for manifest read/write

mopemope/gb,Luit/gb,guiquanz/gb,inconshreveable/gb,tbruyelle/gb,lparkes/gb,tbruyelle/gb,mopemope/gb,inconshreveable/gb,mopemope/gb,hyper-carrot/gb,ches/gb,MerlinDMC/gb,constabulary/gb,acasajus/gb,tianon/gb,URXtech/gb,davidkaya/gb,constabulary/gb,tianon/gb,constabulary/gb,hyper-carrot/gb,davidkaya/gb,ches/gb