assign experimental range for TLV8
Right now TLV8 is a vaguely defined idea that would benefit from a lot of experimentation. There is a risk of experimenting that the chosen TLV8 value might conflict with another, or even a new officially defined use. Therefore, I propose defining a byte range for use in TLV8 messages that is reserved for experimental uses.
(from redmine: created on 2015-03-13)