Ignore erln8.config
Allow the use of GDB/LLDB for debugging
Use a resource for the decoder structure

This is ground work to allow Jiffy to yield back to the scheduler.
Creating a decoder resource will allow for the necessary state to be
carried across NIF function invocations.
Encoders as resources

Update encoding to use resource types for Encoder objects. This will
allow us to be able to properly yield in the future.