exclude the used penlight libraries from coverage analysis
exclude the used penlight libraries from coverage analysis

istr/busted,nehz/busted,mpeterv/busted,leafo/busted,ryanplusplus/busted,azukiapp/busted,sobrinho/busted,xyliuke/busted,DorianGray/busted,Olivine-Labs/busted,o-lim/busted