v7.0.0-beta.23

Main feature is support for private methods

• Bump rollup (Brian Ng)
• Remove outdated imports (Nicolò Ribaudo)
• Remove outdated comment (Nicolò Ribaudo)
• Add support for class private methods (#703) (Karl Cheng)
• Update flow-bin to the latest version 🚀 (#714) (greenkeeper[bot])
• Remove duplicate flow travis job, and update whitelist (#711) (Brian Ng)
• Use correct branch for babel test (#707) (Daniel Tschinder)
• Add allowPrimitiveOverride option to flowParseTypeAnnotatableIdentifier (Brian Ng)
• Disallow failures in the flow-test JOB 🎉 (Nicolò Ribaudo)
• Add option to update the whitelist (Nicolò Ribaudo)
• Add whitelist to flow tests (Nicolò Ribaudo)
• Remove the get_harcoded_tests function, use get_tests (Nicolò Ribaudo)
• Use a Map instead of an Obejct to store tests (Nicolò Ribaudo)