Update changelog re: expanded _do_search() methods (closes #34).

CHANGELOG

@@ -7,6 +7,10 @@ v0.3 (unreleased):
   of False. This is a breaking change if you rely on any filter() methods being
   non-recursive by default.
 - Added a matches() method to Wikicode for page/template name comparisons.
+- The 'obj' param of Wikicode.insert_before(), insert_after(), replace(), and
+  remove() now accepts other Wikicode objects and strings representing parts of
+  wikitext, instead of just nodes. These methods also make all possible
+  substitutions instead of just one.
 - The C tokenizer extension now works on Python 3 in addition to Python 2.7.
 - Various fixes and cleanup.
 

docs/changelog.rst

@@ -16,6 +16,11 @@ Unreleased
   if you rely on any filter() methods being non-recursive by default.**
 - Added a :py:meth:`.matches` method to :py:class:`~.Wikicode` for
   page/template name comparisons.
+- The *obj* param of :py:meth:`Wikicode.insert_before <.insert_before>`,
+  :py:meth:`~.insert_after`, :py:meth:`~.replace`, and :py:meth:`~.remove` now
+  accepts :py:class:`~.Wikicode` objects and strings representing parts of
+  wikitext, instead of just nodes. These methods also make all possible
+  substitutions instead of just one.
 - The C tokenizer extension now works on Python 3 in addition to Python 2.7.
 - Various fixes and cleanup.