Let StorageDoubleMap use borrowed key types (#1804)

* Let StorageDoubleMap use borrowed key types

* Bump impl version
This commit is contained in:
Jordan Beauchamp
2019-02-22 07:26:31 +13:00
committed by Gav Wood
parent 4bf4b37185
commit f5ab24804f
7 changed files with 64 additions and 21 deletions