v0.3.0 groupBy properties

• Support groupBy array of properties
  • Extending shorthand functions to support include and replace
• Update both encoding and spec constraints to support nested encoding property (#123)
• Add domain method to schema (#131)
• Support scale properties

API restructure

• use camelcase for namespace cql.modelGroup => cql.modelGroup
• split query.ts into multiple files

Internal

• Refactor: requireAllPropertiesSpecific --> allowEnumSpecForProperties
• Basic support for transform
• Fix #96 - Test to make sure that each property's default name are unique