fix BPT constant, closes #140
fix BPT constant, closes #140

8l/urbit,8l/urbit,bollu/urbit,philippeback/urbit,rsaarelm/urbit,daveloyall/urbit,galenwp/urbit,8l/urbit,rsaarelm/urbit,daveloyall/urbit,burtonsamograd/urbit,rsaarelm/urbit,galenwp/urbit,bollu/urbit,chc4/urbit,daveloyall/urbit,urbit/archaeology-factor,galenwp/urbit,daveloyall/urbit,Gunga/urbit,jpt4/urbit,rsaarelm/urbit,philippeback/urbit,burtonsamograd/urbit,jpt4/urbit,burtonsamograd/urbit,bollu/urbit,urbit/archaeology-factor,philipcmonk/urbit,bvschwartz/urbit,bvschwartz/urbit,daveloyall/urbit,bvschwartz/urbit,dcow/urbit,chc4/urbit,burtonsamograd/urbit,rsaarelm/urbit,bollu/urbit,yebyen/urbit,rsaarelm/urbit,yebyen/urbit,dcow/urbit,bvschwartz/urbit,chc4/urbit,8l/urbit,philipcmonk/urbit,daveloyall/urbit,8l/urbit,galenwp/urbit,8l/urbit,jpt4/urbit,philippeback/urbit,philipcmonk/urbit,jpt4/urbit,Gunga/urbit,dcow/urbit,rsaarelm/urbit,yebyen/urbit,galenwp/urbit,Gunga/urbit,jpt4/urbit,urbit/archaeology-factor,chc4/urbit,bvschwartz/urbit,bvschwartz/urbit,philipcmonk/urbit,philippeback/urbit,yebyen/urbit,Gunga/urbit,dcow/urbit,chc4/urbit,bollu/urbit,daveloyall/urbit,dphiffer/urbit,galenwp/urbit,burtonsamograd/urbit,galenwp/urbit,urbit/archaeology-factor,burtonsamograd/urbit,jpt4/urbit,galenwp/urbit,jpt4/urbit,Gunga/urbit,dphiffer/urbit,bvschwartz/urbit,8l/urbit,dphiffer/urbit,burtonsamograd/urbit,bollu/urbit,urbit/archaeology-factor,philipcmonk/urbit,daveloyall/urbit,urbit/archaeology-factor,dphiffer/urbit,bollu/urbit,chc4/urbit,galenwp/urbit,bvschwartz/urbit,urbit/archaeology-factor,yebyen/urbit,burtonsamograd/urbit,dphiffer/urbit,Gunga/urbit,daveloyall/urbit,jpt4/urbit,chc4/urbit,8l/urbit,rsaarelm/urbit,yebyen/urbit,dphiffer/urbit,philippeback/urbit,philipcmonk/urbit,jpt4/urbit,philippeback/urbit,philipcmonk/urbit,philippeback/urbit,dcow/urbit,urbit/archaeology-factor,philippeback/urbit,chc4/urbit,Gunga/urbit,8l/urbit,galenwp/urbit,dphiffer/urbit,chc4/urbit,chc4/urbit,philipcmonk/urbit,bollu/urbit,daveloyall/urbit,philipcmonk/urbit,philippeback/urbit,dphiffer/urbit,jpt4/urbit,dphiffer/urbit,rsaarelm/urbit,yebyen/urbit,urbit/archaeology-factor,Gunga/urbit,dcow/urbit,dcow/urbit,dcow/urbit,dphiffer/urbit,burtonsamograd/urbit,bollu/urbit,bvschwartz/urbit,dcow/urbit,8l/urbit,philipcmonk/urbit,philippeback/urbit,urbit/archaeology-factor,Gunga/urbit,Gunga/urbit,yebyen/urbit,burtonsamograd/urbit,bollu/urbit,rsaarelm/urbit,bvschwartz/urbit,yebyen/urbit,yebyen/urbit