Use override keyword when overriding virtual functions
Update fc submodule
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
Fix chain_database_impl::clear_pending (#70)
Update fc submodule
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
Merge pull request #72 from vikramrajkumar/master

Fix #70