[GS] Update regression tests
Merge branch 'develop' of https://github.com/BitShares/bitshares_toolkit into develop
[GS] Update regression tests
[Urgent] Resolve #864

A pointer was being dereferenced without checking if it was valid. I'm
not sure how this never created an issue on the testnet...
Merge branch 'develop' of github.com:BitShares/bitshares_toolkit into develop
Progress on #865

Closing price was not being updated on the each_hour and each_day
granularity as new blocks were processed.
Reword assert error
Update submodule
Merge branch 'develop' into btsx
Fix covering margin positions entered before block 820200