Restore removed release notes.

doc/release-notes.md

@@ -280,6 +280,46 @@ P2P connection management
 
 - New connections to manually added peers are performed more quickly.
 
+Introduction of assumed-valid blocks
+-------------------------------------
+
+- A significant portion of the initial block download time is spent verifying
+  scripts/signatures.  Although the verification must pass to ensure the security
+  of the system, no other result from this verification is needed: If the node
+  knew the history of a given block were valid it could skip checking scripts
+  for its ancestors.
+
+- A new configuration option 'assumevalid' is provided to express this knowledge
+  to the software.  Unlike the 'checkpoints' in the past this setting does not
+  force the use of a particular chain: chains that are consistent with it are
+  processed quicker, but other chains are still accepted if they'd otherwise
+  be chosen as best. Also unlike 'checkpoints' the user can configure which
+  block history is assumed true, this means that even outdated software can
+  sync more quickly if the setting is updated by the user.
+
+- Because the validity of a chain history is a simple objective fact it is much
+  easier to review this setting.  As a result the software ships with a default
+  value adjusted to match the current chain shortly before release.  The use
+  of this default value can be disabled by setting -assumevalid=0
+
+Fundrawtransaction change address reuse
+----------------------------------------
+
+- Before 0.14, `fundrawtransaction` was by default wallet stateless. In
+  almost all cases `fundrawtransaction` does add a change-output to the
+  outputs of the funded transaction. Before 0.14, the used keypool key was
+  never marked as change-address key and directly returned to the keypool
+  (leading to address reuse).  Before 0.14, calling `getnewaddress`
+  directly after `fundrawtransaction` did generate the same address as
+  the change-output address.
+
+- Since 0.14, fundrawtransaction does reserve the change-output-key from
+  the keypool by default (optional by setting  `reserveChangeKey`, default =
+  `true`)
+
+- Users should also consider using `getrawchangeaddress()` in conjunction
+  with `fundrawtransaction`'s `changeAddress` option.
+
 0.14.0 Change log
 =================