4.2

#93 - Improve warning logged for missing dependencies
#92 - Fix/support circular dependency binding when using Provider interface
#90 - Fix compile message - suggest circular dependency when really just missing dependency (missing @singleton)
#91 - For choosing constructor - choose single public constructor or single accessible constructor
#89 - Tidy javadoc to use proper @ in code examples. May require jdk 15 javadoc tool to generate javadoc ...
#88 - Change @generated to use RetentionPolicy.RUNTIME refactor