added changelog for 1.1
added changelog for 1.1

fredemmott/assetic,fredemmott/assetic,shandy05/assetic,shandy05/assetic,renaatdemuynck/assetic,renaatdemuynck/assetic,kriswallsmith/assetic,Sgoettschkes/assetic,matthiasmullie/assetic,shandy05/assetic,lellimecnar/assetic,renaatdemuynck/assetic,webmozart/assetic,kriswallsmith/assetic,kriswallsmith/assetic,sportradar/assetic,mubassirhayat/assetic,sportradar/assetic,matthiasmullie/assetic,lenar/assetic,stof/assetic,Sgoettschkes/assetic,lellimecnar/assetic,matthiasmullie/assetic,matthiasmullie/assetic,lenar/assetic,lellimecnar/assetic,kriswallsmith/assetic,mubassirhayat/assetic,lellimecnar/assetic,Sgoettschkes/assetic,mubassirhayat/assetic,webmozart/assetic,lenar/assetic,stof/assetic,shandy05/assetic,lenar/assetic,sportradar/assetic,fredemmott/assetic,Sgoettschkes/assetic,webmozart/assetic,renaatdemuynck/assetic