Do better with checking the changelog
Do better with checking the changelog

Before, this could fail without a message if there was a changelog but
no matching line.

Also change the changelog format
      == Release v0.0.1
to
      == Release 0.0.1

ycaihua/weave,n054/weave,achanda/weave,Lawouach/weave,paladin74/weave,BWITS/weave,kidaa/weave,awh/weave,philipz/weave,awh/weave,aaam/weave,tomwilkie/weave,2opremio/weave,inercia/weave,weaveworks/weave,cgvarela/weave,narry/weave,paladin74/weave,n054/weave,paulbellamy/weave,awanke/weave,bboreham/weave,2opremio/weave,beni55/weave,aaam/weave,Lawouach/weave,tomwilkie/weave,achanda/weave,rade/weave,kidaa/weave,inercia/weave,weaveworks/weave,achanda/weave,bboreham/weave,dpw/weave,19hz/weave,BWITS/weave,OnePaaS/weave,BWITS/weave,narry/weave,Lawouach/weave,19hz/weave,squaremo/weave,narry/weave,kidaa/weave,weaveworks/weave,dpw/weave,philipz/weave,Lawouach/weave,OnePaaS/weave,2opremio/weave,squaremo/weave,bboreham/weave,ycaihua/weave,achanda/weave,squaremo/weave,bboreham/weave,narry/weave,19hz/weave,OnePaaS/weave,paladin74/weave,philipz/weave,narry/weave,weaveworks/weave,rade/weave,cgvarela/weave,OnePaaS/weave,aaam/weave,rade/weave,aaam/weave,dpw/weave,awh/weave,rade/weave,squaremo/weave,errordeveloper/weave,kidaa/weave,errordeveloper/weave,n054/weave,paulbellamy/weave,BWITS/weave,ycaihua/weave,errordeveloper/weave,awh/weave,tomwilkie/weave,errordeveloper/weave,dpw/weave,paulbellamy/weave,n054/weave,tomwilkie/weave,errordeveloper/weave,aaam/weave,19hz/weave,beni55/weave,beni55/weave,beni55/weave,awanke/weave,cgvarela/weave,philipz/weave,awh/weave,squaremo/weave,tomwilkie/weave,paladin74/weave,paladin74/weave,kidaa/weave,inercia/weave,philipz/weave,awanke/weave,OnePaaS/weave,awanke/weave,inercia/weave,achanda/weave,inercia/weave,ycaihua/weave,BWITS/weave,bboreham/weave,2opremio/weave,cgvarela/weave,beni55/weave,rade/weave,paulbellamy/weave,ycaihua/weave,cgvarela/weave,n054/weave,2opremio/weave,awanke/weave,dpw/weave