v0.4.0

• chore(test): use @babel/core 5d89fc1
• chore(package): update fields 3b39d2e
• chore(package): update description 41b6e8a
• chore(package): bump deps d3a081d
• chore(README): remove greenkeeper badge be7c8a7
• chore(CHANGELOG): update to v3.1.1 9f787de

v0.3.1...v0.4.0