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[dagbdagb]

When iterating over something, it is occasionally useful to go back in time. In effect, removing from context anything that happened after a certain point.

My first instinct was to allow for setting 'bookmarks'. But this is a bit rigid. Is it feasible to create a client side feature which effectively says "delete from here to the end"?

[turboderp]

I will look into adding some more usability features like that in a bit. Currently you'd have to delete the blocks one by one which I guess is a little inconvenient.

[turboderp]

Should be added now.

[dagbdagb]

LGTM.