v0.21.1

• Audit fix of dependencies
• Updated dependencies
• Upgraded implementation to TypeScript 4.3.5

v0.21.0

• Audit fix of dependencies
• Updated dependencies
• Added support for contracting an abstract class
• Fixed bug #210 for supporting subcontract private fields
• Added within feature for declaring timing requirements
• Updated documentation
• Third party features are subject to a class's invariant when apply/call is used
• A contracted feature can not be applied to objects of a different base class
• Subcontract extends are now enforced
• Updated retry type declaration to support accessors.

v0.20.5

• Features named with a symbol now support @override

v0.20.4

• Improved error messaging with @override when feature is missing
• Fixed source code typos

v0.20.3

• Fixed bug #202

v0.20.2

• Additional usability fix for #197
• Updated README

v0.20.1

• Fixed bug #197

v0.20.0

• Updated license headers to reference Final Hill LLC
• BREAKING CHANGE: contracts now managed separate from the class
• Rewrote README to reflect the new architecture
• Updated dependencies
• Merged jest.config.js into package.json
• Updated linting rules
• Moved unit tests to separate folder
• Public property definitions are now illegal
• Fixed package.json debug command
• Bugfix of invariant inheritance

v0.19.0

• Updated README to include unpkg reference
• Enabled sourcemaps
• npm audit fix
• Updated dependencies
• Linting fixes
• Updated contact info in README and package.json
• BREAKING CHANGE: Decorators now accept arrow functions instead of traditional functions. The first parameter is self.
• BREAKING CHANGE: @ensures now provides old as a parameter to access instance property values before feature execution

v0.18.1

• Fixed webpack configuration issue