v4.0.0

• Bump eslint-utils from 1.3.1 to 1.4.3 (#25)
• Bump js-yaml from 3.12.1 to 3.14.0 (#28)
• Bump decompress from 4.2.0 to 4.2.1 (#29)
• [Easy] replace lost network deployment info (#37)
• Merge pull request #34 from gnosis/update_deploy_owl_log
• rearrange console log from OWL token migration
• [xOWL] deployment (#33)
• Rename Owl -> OWL to fix master
• update package-lock.json
• Bump truffle to support --config param
• Fix master build by compiling all contracts before running test
• Implement Bridge Token OWL (#32)
• Depend on tokenbridge contracts (#31)
• Prepare repo for solidity 0.4 bridge contract (#30)
• Merge pull request #27 from gnosis/yarn_upgrade
• [Easy] yarn upgrade
• Merge pull request #22 from gnosis/feature/test_owl_mastercopy_change