Improved error messages with setOption functionality
Improved error messages with setOption functionality

Perviously the setOption function would return false but also issue a
warning. Now the warning is suppressed and an exception is thrown.

csburton/Stash,alawnchen/Stash,csburton/Stash,localheinz/Stash,tedious/Stash,andrerom/Stash,bankiru/Stash,graphis/Stash,graphis/Stash,localheinz/Stash,AndrewCarterUK/Stash,jaredtking/Stash,theUniC/Stash,AndrewCarterUK/Stash,jaredtking/Stash,andrerom/Stash,tedious/Stash,theUniC/Stash,bankiru/Stash,alawnchen/Stash