Include original clock and feeds in history() elements etc

Writer._decode converts results taken from the database before being passed to the user. The vector clock entries are rearranged to match the local feed list. (It looks like the trie is altered as well although I'm not familiar with the trie yet)

It would be nice for the original, remote vector clock to be available in the result, in case the clock was used for anything (I'm using it to hash the feed tips together). For this to be useful, the remote feeds could be returned too (which I guess means passing them via _encodeMap).

Something like this perhaps:

diff --git a/index.js b/index.js
index bfd9c46..f84e084 100644
--- a/index.js
+++ b/index.js
@@ -748,6 +748,10 @@ Writer.prototype._decode = function (seq, buf, cb) {
   val.path = hash(val.key, true)
   val.value = val.value && this._db._valueEncoding.decode(val.value)

+  val.rawClock = val.clock
+  val.rawTrie = val.trie
+  val.rawFeeds = this._mapList(this._db.feeds, this._encodeMap, null)
+
   if (this._feedsMessage && this._feedsLoaded === val.inflate) {
     this._maybeUpdateFeeds()
     val.feed = this._id

Start in index.js at Writer._decode and trace how database results become history() elements, then inspect _encodeMap and the handling of vector clocks, tries, and feeds. Done means the result exposes the original remote clock and relevant feeds without losing the existing decoded values; clarify whether the trie must also be preserved.