v0.2.5 released

[anakrish]

Release page: https://github.com/microsoft/regorus/releases/tag/regorus-v0.2.5

A key highlight of this release is rego-extensions feature. When turned on, it will enable extensions to the Rego language that we've added to improve policy authoring and execution experience. The first language extensions is support for or keyword that allows expressing logical or.