Implement the Bitcoin Core blockchain provider
Use the AbstractBlockchainProvider interface in the Controller class
Add support for the chain.com API
Adapt unit tests to work with the AbstractBlockchainProvider interface
Consolidate the 'providers' sub-module into a single file
Add unit tests for the Configuration class
Upgrade the openassets module to version 1.2
Implement transaction signing
Add support for derived addresses when sending assets
Update the unit tests
Improve address validation
Update README.rst
Improve address validation
Disable address derivation
Validate the address format when sending an asset
Add the 'addresses' sub-module
Update README.rst
Fix a validation bug in the "issueasset" operation