updated CHANGELOG for 0.4.2 release
updated CHANGELOG for 0.4.2 release

hexid/casperjs,istr/casperjs,linkedin/casperjs,jjyycchh/casperjs,casperjs/casperjs,PeterWangPo/casperjs,n1k0/casperjs,hudl/casperjs,casperjs/casperjs,dj31416/casperjs,PeterWangPo/casperjs,mcwonka/casperjs,davidwhthomas/casperjs,muntasir2000/casperjs,mcwonka/casperjs,artillery/casperjs,casperjs/casperjs,hlr1983/casperjs,alexbiehl/casperjs,mickaelandrieu/casperjs,istr/casperjs,pbrazdil/casperjs,n1k0/casperjs,vladikoff/casperjs,PeterWangPo/casperjs,alexbiehl/casperjs,pbrazdil/casperjs,RobertoMalatesta/casperjs,jjyycchh/casperjs,jjyycchh/casperjs,jefleponot/casperjs,muntasir2000/casperjs,mickaelandrieu/casperjs,casperjs/casperjs,RobertoMalatesta/casperjs,jefleponot/casperjs,jefleponot/casperjs,n1k0/casperjs,jamesanthonyferguson/casperjs,artillery/casperjs,muntasir2000/casperjs,soundyogi/casperjs,soundyogi/casperjs,Andrey-Pavlov/casperjs,artillery/casperjs,JZL/casperjs,RobertoMalatesta/casperjs,alexbiehl/casperjs,Andrey-Pavlov/casperjs,HienLeThi/Casperjs_Demo,linkedin/casperjs,linkedin/casperjs,ravindrasingh22/casperjs,flyHe/casperjs,ravindrasingh22/casperjs,jjyycchh/casperjs,n1k0/casperjs,hlr1983/casperjs,vladikoff/casperjs,soundyogi/casperjs,cryptoquick/casperjs,soundyogi/casperjs,mcwonka/casperjs,n1k0/casperjs,davidwhthomas/casperjs,PeterWangPo/casperjs,muntasir2000/casperjs,joshuafcole/casperjs,n1k0/casperjs,joshuafcole/casperjs,jamesanthonyferguson/casperjs,pbrazdil/casperjs,hexid/casperjs,hexid/casperjs,flyHe/casperjs,kyroskoh/casperjs,Andrey-Pavlov/casperjs,cryptoquick/casperjs,singhdev/casperjs,soundyogi/casperjs,artillery/casperjs,flyHe/casperjs,muntasir2000/casperjs,cryptoquick/casperjs,mickaelandrieu/casperjs,JZL/casperjs,muntasir2000/casperjs,dj31416/casperjs,vietch2612/casperjs,pcarrier-packaging/deb-casperjs,ravindrasingh22/casperjs,vietch2612/casperjs,pbrazdil/casperjs,davidwhthomas/casperjs,cryptoquick/casperjs,istr/casperjs,kyroskoh/casperjs,artillery/casperjs,HienLeThi/Casperjs_Demo,vladikoff/casperjs,ravindrasingh22/casperjs,joshuafcole/casperjs,hlr1983/casperjs,singhdev/casperjs,Andrey-Pavlov/casperjs,dj31416/casperjs,kyroskoh/casperjs,jamesanthonyferguson/casperjs,linkedin/casperjs,RobertoMalatesta/casperjs,alexbiehl/casperjs,vietch2612/casperjs,hexid/casperjs,flyHe/casperjs,JZL/casperjs,linkedin/casperjs,vladikoff/casperjs,jamesanthonyferguson/casperjs,davidwhthomas/casperjs,mickaelandrieu/casperjs,casperjs/casperjs,mcwonka/casperjs,vietch2612/casperjs,HienLeThi/Casperjs_Demo,dj31416/casperjs,sircelsiussexy/casperjs,flyHe/casperjs,sircelsiussexy/casperjs,vietch2612/casperjs,dj31416/casperjs,JZL/casperjs,PeterWangPo/casperjs,Andrey-Pavlov/casperjs,artillery/casperjs,jjyycchh/casperjs,linkedin/casperjs,JZL/casperjs,hudl/casperjs,HienLeThi/Casperjs_Demo,mickaelandrieu/casperjs,HienLeThi/Casperjs_Demo,JZL/casperjs,vladikoff/casperjs,RobertoMalatesta/casperjs,casperjs/casperjs,RobertoMalatesta/casperjs,HienLeThi/Casperjs_Demo,kyroskoh/casperjs,hlr1983/casperjs,pcarrier-packaging/deb-casperjs,pbrazdil/casperjs,joshuafcole/casperjs,hexid/casperjs,cryptoquick/casperjs,jefleponot/casperjs,sircelsiussexy/casperjs,jefleponot/casperjs,sircelsiussexy/casperjs,jamesanthonyferguson/casperjs,mcwonka/casperjs,davidwhthomas/casperjs,hexid/casperjs,mcwonka/casperjs,pcarrier-packaging/deb-casperjs,kyroskoh/casperjs,pcarrier-packaging/deb-casperjs,alexbiehl/casperjs,davidwhthomas/casperjs,flyHe/casperjs,ravindrasingh22/casperjs,istr/casperjs,hudl/casperjs,hlr1983/casperjs,sircelsiussexy/casperjs,singhdev/casperjs,jefleponot/casperjs,singhdev/casperjs,jamesanthonyferguson/casperjs,cryptoquick/casperjs,istr/casperjs,sircelsiussexy/casperjs,pbrazdil/casperjs,PeterWangPo/casperjs,hudl/casperjs,vietch2612/casperjs,alexbiehl/casperjs,Andrey-Pavlov/casperjs,mickaelandrieu/casperjs,soundyogi/casperjs,hlr1983/casperjs,joshuafcole/casperjs,dj31416/casperjs,ravindrasingh22/casperjs,jjyycchh/casperjs,kyroskoh/casperjs,istr/casperjs,hudl/casperjs,joshuafcole/casperjs,singhdev/casperjs