Added English friendly interface
Drop older interface. Added calls_* methods.
Checking in changes prior to tagging of version 0.03.

Changelog diff is:

diff --git a/Changes b/Changes
index 294e3c5..be2a602 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,12 @@ Revision history for Perl extension Test-Spy

 {{$NEXT}}

+0.03 2014-03-07T03:49:13Z
+
+    [INCOMPATIBLE CHANGES]
+    - Rename spy() to spy_on()
+    - Added calls_* methods.
+
 0.02 2014-03-05T11:02:57Z

     Do not call original function by default.