Support hoedown v2.0.0.
Checking in changes prior to tagging of version 1.00.

Changelog diff is:

diff --git a/Changes b/Changes
index 47094c9..a2742c8 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,14 @@ Revision history for Perl extension Text-Markdown-Hoedown

 {{$NEXT}}

+1.00 2013-11-20T11:38:19Z
+
+    [INCOMPATIBLE CHANGES]
+    - Switch to hoedown 2.0.0.
+      Modified low level APIs. If you are using undocumented low level APIs,
+      your application may not work correctly!
+      (tokuhirom)
+
 0.07 2013-10-02T00:38:28Z

     - Documented low level API.