Update README.org and CHANGELOG.md for forgotten breaking change.

Now that the built-in destructuring style uses `pcase`, some warnings and
errors have changed.

CHANGELOG.md

@@ -18,6 +18,9 @@ This document describes the user-facing changes to Loopy.
   ([#197], [#145]).  These commands no longer take multiple conditions in the
   same command.
 
+- The built-in destructuring system was switched to use `pcase` internally,
+  so some warnings and errors are now reportedly differently ([#199]).
+
 ### Bugs Fixed
 
 - Allow `back` in `set-prev` to not be known at compile time ([#202]).

README.org

@@ -30,7 +30,7 @@ please let me know.
 -----
 
  _Recent breaking changes:_
- - Unreleased:
+ - Version 0.13.0:
    - The deprecated =:init= keyword argument has been removed.  Use the =with=
      special macro argument instead.
    - The deprecated =:result-type= keyword argument has been removed.  Use the
@@ -39,41 +39,8 @@ please let me know.
    - The commands =always=, =never=, and =thereis= now have the signature
      =(command [VAR] CONDITION &key into)=, similar to accumulation commands.
      They no longer take multiple condition arguments.
- - Version 0.12.0:
-   - The boolean commands =always=, =never=, and =thereis= now behave more like
-     accumulation commands and use ~loopy-result~ by default.
-   - Using multiple conditions in =always=, =never=, and =thereis= is
-     deprecated.  These commands will be changed to have call argument lists
-     more like accumulation commands, such as =(always [VAR] VAL &key into)=.
-     This will simplify the code and remove an inconsistency between them and
-     the other commands.
-   - Re-using iteration variables in multiple iteration commands now signals
-     an error.  It never produced correct code.
-   - By default, the commands =cons=, =iter=, =nums=, and =seq-index=
-     /can/ update named iteration variables outside of the main loop body
-     and initialize variables to non-nil values, producing faster code.
-     This can be overridden via the special macro argument =with=.
-   - =:result-type= is deprecated.  Instead, use coercion functions in
-     special macro arguments, possibly with =accum-opt=.
-   - The =:init= keyword argument is deprecated.  Use the special macro argument
-     =with= instead.
-   - =reduce= has been fixed. It now works like ~cl-reduce~ when the variable
-     starting value isn't explicitly given, storing the first value instead of
-     storing the result of passing the first value and ~nil~ to the function.
-   - The deprecated flags =lax-naming= and =split= were removed.
-   - The deprecated command =sub-loop= was removed.
-   - The non-keyword arguments of =numbers= are deprecated.  Use the keyword
-     arguments instead.  A =:test= keyword argument was added, which is more
-     flexible and explicit than the non-keyword arguments.
-   - Fixed a problem with macro expansion in some cases for sub-macros
-     that created a new macro environment (e.g., ~cl-flet~).
-   - Loop commands now evaluate arguments like =:test=, =:key=, and =:by= only
-     once.
-   - Change the argument order of =test= to be (1) the sequence element then (2)
-     the tested value, like in ~seq-contains-p~ and _unlike_ in ~cl-member~, and
-     explicitly state this order in the documentation.
-   - =&key= now signals an error when there are unmatched keys in the plist, as
-     in =cl-lib=.  =&allow-other-keys= has been added.
+   - The built-in destructuring system was switched to use ~pcase~ internally,
+     so some warnings and errors are now reportedly differently.
  - See the [[https://github.com/okamsn/loopy/blob/master/CHANGELOG.md][change log]] for less recent changes.
 
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