travis mem heap fix
travis mem heap fix

maxime-gautre/ReactiveMongo,ReactiveMongo/ReactiveMongo,cchantep/ReactiveMongo,ReactiveMongo/ReactiveMongo,maowug/ReactiveMongo,ornicar/ReactiveMongo,mcveat/ReactiveMongo,maowug/ReactiveMongo,charleskubicek/ReactiveMongo,sh1ng/ReactiveMongo,charleskubicek/ReactiveMongo,bfil/ReactiveMongo,maxime-gautre/ReactiveMongo,viktortnk/ReactiveMongo,lunatech-labs/lunatech-reactivemongo,cchantep/ReactiveMongo,ornicar/ReactiveMongo,mcveat/ReactiveMongo,reactific/ReactiveMongo,viktortnk/ReactiveMongo,avdv/ReactiveMongo,avdv/ReactiveMongo