support for OER encoding

[schmittlauch]

The x.696 Octet Encoding Rules are a relatively recent (2014) standard for space- and computing-efficient encoding. In comparison to PER, they trade ease of implementation and en-/decoding complexity for space, so they are a little less space efficient but are supposed to be easier to implement.

As this module doesn't yet have support for any space-efficient packed encodings, this would be a good point to start with. Is there any interest in supporting this?

standard document