Updated Weave TLV Format specification to revision 5

-- Renamed path type to list and clarified text in corresponding section.
-- Added section on canonical ordering of tags.
-- Added section describing anonymous tags.
-- Clarified descriptions of structure and array types.
-- Clarified encoding of floating point values with reference to RFC-4506.
-- Moved revision history to end of document.
diff --git a/doc/specs/weave-tlv-format.pdf b/doc/specs/weave-tlv-format.pdf
index 28a78ad..406985d 100644
--- a/doc/specs/weave-tlv-format.pdf
+++ b/doc/specs/weave-tlv-format.pdf
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