coap-message-implementations 0.1.4

Implementations of coap-message traits, and tools for building them
Documentation
# Changes in 0.1.4

* Add defmt feature, deriving defmt::Format where it makes sense.

# Changes in 0.1.3

* Update heapless dependency.
  While this change may be observable to those who attempt to downcast the heapless item returned through an `impl Trait` return,
  that change is not regarded as breaking
  (for this is the very kind of change such a return is there to allow).
* Update README.

# Changes in 0.1.2

* Added `downcast` feature providing a `downcast_from` method to readable and writable messages based on coap-message 0.3.2 features.
* Fixed read view of options of writable message to not emit spurious empty options.

# Changes in 0.1.1

* Added alloc feature / heap::HeapMessage implementation.

# Changes in 0.1.0

* Moved out of coap-message-utils.