Need a --resume option.

[kfogel]

A large CSV being converted to a wiki over a flaky Net connection will often hang. But the output tells you which page it last completed (CREATED PAGE: Foo Bar Baz), so why not offer a resume option, taking the page title as its argument? csv2wiki would just dry-run all pages up to that point, though still remembering them for TOC and category purposes, until it hit the page it was told resume with, then continue normally starting with that one.

(This patch might save some time in making such a change.)