Added get_metadata method to DynamicURLStore.  Changed update/set methods in JoinedStore (excluding multiset methods) to not just write to the 0th element in the stores list.  Fixed a few trivial typos.
Type in last commit
Typo in last commit
DynamicURLStore changed permissions methods to used "auth"
fixed mapping
Resolved merge conflicts
Merge pull request #51 from hugadams/adamwip

Adamwip