Add changelog entries for ExternalLinks.

CHANGELOG

@@ -1,8 +1,10 @@
 v0.3 (unreleased):
 
-- Added complete support for HTML Tags, along with appropriate unit tests. This
-  includes forms like <ref>foo</ref>, <ref name="bar"/>, and wiki-markup tags
-  like bold ('''), italics (''), and lists (*, #, ; and :).
+- Added complete support for HTML Tags, including forms like <ref>foo</ref>,
+  <ref name="bar"/>, and wiki-markup tags like bold ('''), italics (''), and
+  lists (*, #, ; and :).
+- Added support for ExternalLinks (http://example.com/ and
+  [http://example.com/ Example]).
 - Wikicode's filter methods are now passed 'recursive=True' by default instead
   of False. This is a breaking change if you rely on any filter() methods being
   non-recursive by default.

docs/changelog.rst

@@ -7,10 +7,11 @@ v0.3
 Unreleased
 (`changes <https://github.com/earwig/mwparserfromhell/compare/v0.2...develop>`__):
 
-- Added complete support for HTML :py:class:`Tags <.Tag>`, along with
-  appropriate unit tests. This includes forms like ``<ref>foo</ref>``,
-  ``<ref name="bar"/>``, and wiki-markup tags like bold (``'''``), italics
-  (``''``), and lists (``*``, ``#``, ``;`` and ``:``).
+- Added complete support for HTML :py:class:`Tags <.Tag>`, including forms like
+  ``<ref>foo</ref>``, ``<ref name="bar"/>``, and wiki-markup tags like bold
+  (``'''``), italics (``''``), and lists (``*``, ``#``, ``;`` and ``:``).
+- Added support for :py:class:`.ExternalLink`\ s (``http://example.com/`` and
+  ``[http://example.com/ Example]``).
 - :py:class:`Wikicode's <.Wikicode>` :py:meth:`.filter` methods are now passed
   *recursive=True* by default instead of *False*. **This is a breaking change
   if you rely on any filter() methods being non-recursive by default.**