Make Parser instance available to postprocessors

[tjvr]

How about in postprocessors binding this to the Parser? (Or making the Parser the fourth argument?) Massive potential for abuse, of course; but it would stop us from adding a potentially unbounded number of arguments to State :-)

For #201.

[EricMCornelius]

So, how do you anticipate getting the Parser object reference passed to the State.finish prototype method? Manual passing of the parameter to the invocation as an argument? That would require a reference on the Column. Or should that be also threaded through the Column.process?

[tjvr]

should that be also threaded through the Column.process?

Probably, to avoid the circular reference. :-)

[simonhildebrandt]

This would be lovely. :)