wp-cli/wp-cli — pull request #931 by c10b10 (2013-12-23 12:46:02+00:00)
Title: Add the lower and upper bounds for the media regenerate subcommand

Sometimes when you generate 97k thumbnails, and your process dies after 5 hours, you want to resume it from where it left off.

Since the generation is starts with the latest posts, the highest ids go first. So:

* `[--start=]` defines the upper bound. All posts with ids higher than this ID will be ignored.
* `[--end=]` defines the lower bound. All posts with ids lower than this ID will be ignored.