Created single interface for compiler and replaced version checking with feature checking
Created single interface for compiler and replaced version checking with feature checking

jbrantly/ts-loader,MortenHoustonLudvigsen/ts-loader,jbrantly/ts-loader,TypeStrong/ts-loader,MortenHoustonLudvigsen/ts-loader,jbrantly/ts-loader,gsteacy/ts-loader,TypeStrong/ts-loader,MortenHoustonLudvigsen/ts-loader,gsteacy/ts-loader,gsteacy/ts-loader