v0.1.4 released

[anakrish]

This release is done primarily to enable use in kata-containers. Having a lightweight, fast, Rust-based Rego engine for use in the kata-agent was one of the key reasons for developing Regorus.

Key highlights

• Cleaned up Cargo.toml based on feedback from @danmihai1
• early return optimization. If a rule produces constant value, then not all iterations of loops in the rule need to be executed. See Early Return from loops in a rule #209.