Force enclosing of all columns with optional switch
Fix local/global delimiter bug between output() and _enclose_value() by
setting global delimiter to local if not null
Fix local/global delimiter bug between output() and _enclose_value() by
setting global delimiter to local if not null
Pass delimiter from unparse function to _enclose_value function, revert
changes from previous approach
Merge pull request #20 from Norcoen/master

Force enclosing of all columns with optional switch