Release v1.4.0

• Introduce Numeric Metrics
• Introduce Forced Variation
• Upgrade to use new event API

Release v2.0.0.beta

• Introduce feature flags and feature rollouts support.
• Introduce variable support via feature flags.

Release v1.3.0

• Introduce user profile service support.

Release 1.2.0

• Remove support for datafile version 1.
• Refactor order of bucketing operations.
• Always use Event Builder V2.