Chain.has_feature: new method.
Chain.has_feature: new method.

machinecoin-project/machinecoin-blockchainexplorer-abe,BuckyGreen/latiumexplorer,muchbeli/bitcoin-abe,Rimbit/RimbitExplorer,Rimbit/RimbitExplorer,muchbeli/bitcoin-abe,MatthewLM/PeercoinAbeExplorer,UdjinM6/darkcoin-abe,ultracoindev/ultracoin-abe,gjhiggins/altcoin-abe,Dilmacoin/dilmacoin-abe,Serya05/bitcoin-abe,Cybnate/NuBits-Abe-explorer,ultracoindev/ultracoin-abe,Max-Coin/maxcoin-abe,jonnynewbs/bitcoin-abe,mmitech/bitcoin-abe,n00bsys0p/altcoin-abe,jeromewu/bitcoin-abe-opennet,gjhiggins/chaincoin-abe,mmitech/bitcoin-abe,CraigsCoin/abe-craigscoin,gjhiggins/abe-bee2,machado-rev/HTMLCoinExplorer,muchbeli/bitcoin-abe,n00bsys0p/altcoin-abe,machado-rev/HTMLCoinExplorer,machado-rev/HTMLCoinExplorer,Max-Coin/maxcoin-abe,cryptapus/bitcoin-abe,gjhiggins/chaincoin-abe,Rimbit/RimbitExplorer,machado-rev/HTMLCoinExplorer,leadcoin-reboot/leadcoin-abe,leadcoin-reboot/leadcoin-abe,gjhiggins/abe-bee2,Cybnate/NuBits-Abe-explorer,MatthewLM/PeercoinAbeExplorer,jonnynewbs/bitcoin-abe,Cybnate/NuBits-Abe-explorer,machinecoin-project/machinecoin-blockchainexplorer-abe,MatthewLM/PeercoinAbeExplorer,jeorgen/bitcoin-abe,Rimbit/RimbitExplorer,ultracoindev/ultracoin-abe,BuckyGreen/latiumexplorer,BuckyGreen/latiumexplorer,jeromewu/bitcoin-abe-opennet,muchbeli/bitcoin-abe,gjhiggins/altcoin-abe,BuckyGreen/latiumexplorer,gjhiggins/abe-bee2,cryptapus/bitcoin-abe,ultracoindev/ultracoin-abe,Cybnate/NuBits-Abe-explorer,CraigsCoin/abe-craigscoin,Cybnate/NuBits-Abe-explorer,UdjinM6/darkcoin-abe,ultracoindev/ultracoin-abe,jeorgen/bitcoin-abe,Serya05/bitcoin-abe,MatthewLM/PeercoinAbeExplorer,Dilmacoin/dilmacoin-abe