* 0.5.4
	- Add message signer cli
	- Add pbkdf2 support
	- Add -0 flag for omitting newline on output
	- Revert RLP to 2.0.1, to not break eth-tester in dependents
* 0.5.3
	- Upgrade RLP to 3.0.0 (eliminates really annoying cytoolz warning on stdout)
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changelog before 0.5.3 will be written later, sorry