Automated transactions

[frosklis]

There's an issue with some automated transactions being duplicated, probably because of bad regular expression logic.

• Investigate the matter and open bug if needed.

Originally posted by @frosklis in #1 (comment)

Automated transaction logic is hard.

• They are not applied recursively, meaning the newly created postings are not subject to be evaluated.
• but a posting can be matched as many times as needed for different transactions

In particular, I am having trouble with modifying the posting itself in an efficient way. That happens when an automated transaction adds a tag to the posting.

The current solution in master works because the test case is too simple. It doesn't work completely in my personal ledger.