While developing i often use the rpc console for some quick checks. I always missed a persisted history.
* This will add storing of the history.
* "importprivkey" and "signrawtransaction" are blacklisted for the history (new: blacklisted also for the in-memory-history).
* Last command will not get overwritten when browsing the history (shell like, but currently not possibility to store changed history commands till executing a new command)