6.0.0

• Improve error messages and handling in encoding and decoding process.
• Now it's possible to extends a codec.
• Now it's possible to annotate a custom annotation, creating a default.
• Added `ContextParameter` annotation which assigns a constant or calculated value to a parameter that will be added to the context before processing; each context parameter is created before a field is decoded or encoded and removed as soon as the field processing completes.
• Added `enumerations` key in template and configuration descriptions.
• Added `Generator`, to create an annotated `Template` and `ConfigurationMessage` from a description generated by the `Describer` (an enumeration is represented as an array of strings, each string is a pair `()`, where `name` is the name of the enum element, and `value` is a number associated with the element; context data are ignored).
• Added long description and unit of measure attribute to `BindBitSet`, `BindInteger`, `BindObject`, `BindString`, `BindStringTerminated`, `Evaluate`, and `PostProcess` annotations.
• Fixed bug on missing `annotationType` in alternatives' description.
• 2× in speed with respect to previous version due to efficient use of (configurable) memoizers (see `Parser`) and other improvements.
• Custom `DeviceTypes` code length (no longer bounded to be a `byte`).