dtrs_protocol

[Peter Dobcsanyi]

I have added a new attribute to <list_of_designs> called
"dtrs_protocol". Its value will be used by applications to check
compliance of an ext-rep doc and of themself. It is a compulsory
attribute and must contain a fixed string containing the current
protocol version of ext-rep schema. Here are the planned values:

    from now on until the publication:	"1.0beta"

    during the debate:			"1.0rc1"
					"1.0rc2"
	release candidates as needed	....

    final release:			"1.0"

In the future, the minor version number will be incremented when upward
compatible minor changes have been made. That means that older documents
satisfying previous protocols with the same major version number remain
valid under the new protocol. The corresponding requirement for
implementations is that an implementation in compliance with a given
protocol version should be able to deal with any document of the same
major and a lower protocol version.

The major version will be incremented between not entirely compatible
versions or when significant new structures have been introduced.

--             ,
    Peter Dobcsanyi