v1.0.0

This version of the GrantShares contracts is running at the time GrantShares was first released.
The initial contracts were deployed earlier. Many changes and improvements were applied after that (due to the security audit and other learnings) and lead up to this version. The repository at this commit contains migration-related code that will be removed again after the migration is done. The old contract code is still in this commit because it was necessary for testing the migration in integration tests.