Release v0.3.1

Added

• documentation about motivation, usage, and package structure
• include function to render a subpackage under kcps with the provided values
• --output parameter on compile to specify where to place compiled artifacts

Changed

• render yaml multi-documents stream instead of kubectl List object
• --values|-f option into --input|-i on compile

Fixed

• unwanted print when validating values
• wrong package version on --version