* Problem: Source files contain no license info
Solution: Add comments with SPDX license info to source files
* Python 3 files don't need # -*- coding: utf-8 -*-
* Testing tendermint docker compose for travis
* Typo tendermint*
* Re-do migrate cli changes
* don't skip event stream test
* Fix flake8 and unskip a test skipped during dev
* Revert styling changes made from editor
* skip a failing test case which was already disabled
* Remove reference to 'keypair' in commands
- Remove commands that were not required.
- export-my-pubkey
- set-shards
- set-replicas
- add-replicas
- remove-replicas
- Update bigchaindb --help, usage description
- Re-enable tests
- Update docker-compose.travis.yml and Dockerfile for travis
because some env variables are not needed
