ConnectionCache: minor cleanup and doc enhancements
ConnectionCache: minor cleanup and doc enhancements

ashishdeshpande/robotframework,dkentw/robotframework,suvarnaraju/robotframework,wojciechtanski/robotframework,eric-stanley/robotframework,synsun/robotframework,kyle1986/robortframe,jaloren/robotframework,ChrisHirsch/robotframework,edbrannin/robotframework,userzimmermann/robotframework,Colorfulstan/robotframework,alexandrul-ci/robotframework,alexandrul-ci/robotframework,moto-timo/robotframework,jorik041/robotframework,HelioGuilherme66/robotframework,jorik041/robotframework,rwarren14/robotframework,HelioGuilherme66/robotframework,kurtdawg24/robotframework,kyle1986/robortframe,fingeronthebutton/robotframework,JackNokia/robotframework,robotframework/robotframework,nmrao/robotframework,yahman72/robotframework,xiaokeng/robotframework,xiaokeng/robotframework,suvarnaraju/robotframework,robotframework/robotframework,robotframework/robotframework,yahman72/robotframework,suvarnaraju/robotframework,joongh/robotframework,wojciechtanski/robotframework,un33k/robotframework,nmrao/robotframework,rwarren14/robotframework,snyderr/robotframework,JackNokia/robotframework,yonglehou/robotframework,synsun/robotframework,snyderr/robotframework,nmrao/robotframework,fingeronthebutton/robotframework,snyderr/robotframework,SivagnanamCiena/robotframework,jaloren/robotframework,rwarren14/robotframework,joongh/robotframework,SivagnanamCiena/robotframework,kyle1986/robortframe,SivagnanamCiena/robotframework,Colorfulstan/robotframework,stasiek/robotframework,edbrannin/robotframework,dkentw/robotframework,kyle1986/robortframe,snyderr/robotframework,Colorfulstan/robotframework,un33k/robotframework,ChrisHirsch/robotframework,stasiek/robotframework,kurtdawg24/robotframework,snyderr/robotframework,xiaokeng/robotframework,un33k/robotframework,yonglehou/robotframework,joongh/robotframework,JackNokia/robotframework,synsun/robotframework,dkentw/robotframework,wojciechtanski/robotframework,SivagnanamCiena/robotframework,kurtdawg24/robotframework,fingeronthebutton/robotframework,userzimmermann/robotframework,rwarren14/robotframework,alexandrul-ci/robotframework,suvarnaraju/robotframework,ashishdeshpande/robotframework,rwarren14/robotframework,synsun/robotframework,jorik041/robotframework,kurtdawg24/robotframework,nmrao/robotframework,wojciechtanski/robotframework,moto-timo/robotframework,alexandrul-ci/robotframework,ashishdeshpande/robotframework,jorik041/robotframework,eric-stanley/robotframework,stasiek/robotframework,moto-timo/robotframework,Colorfulstan/robotframework,ashishdeshpande/robotframework,yonglehou/robotframework,yonglehou/robotframework,eric-stanley/robotframework,nmrao/robotframework,moto-timo/robotframework,yahman72/robotframework,jaloren/robotframework,userzimmermann/robotframework,xiaokeng/robotframework,edbrannin/robotframework,un33k/robotframework,edbrannin/robotframework,jaloren/robotframework,xiaokeng/robotframework,dkentw/robotframework,yahman72/robotframework,wojciechtanski/robotframework,stasiek/robotframework,synsun/robotframework,HelioGuilherme66/robotframework,eric-stanley/robotframework,fingeronthebutton/robotframework,suvarnaraju/robotframework,JackNokia/robotframework,userzimmermann/robotframework,yahman72/robotframework,moto-timo/robotframework,joongh/robotframework,alexandrul-ci/robotframework,userzimmermann/robotframework,joongh/robotframework,ashishdeshpande/robotframework,kyle1986/robortframe,stasiek/robotframework,JackNokia/robotframework,jorik041/robotframework,Colorfulstan/robotframework,yonglehou/robotframework,ChrisHirsch/robotframework,ChrisHirsch/robotframework,ChrisHirsch/robotframework,jaloren/robotframework,SivagnanamCiena/robotframework,un33k/robotframework,kurtdawg24/robotframework,fingeronthebutton/robotframework,dkentw/robotframework,edbrannin/robotframework