Changelog for r0.1.0 IS spec
+r0.1.0
+======
+
+This is the first release of the Identity Service API. With this API, clients and
+homeservers can store bindings between third party identifiers such as email addresses
+and phone numbers, associating them with Matrix user IDs. Additionally, identity
+servers offer the ability to invite third party users to Matrix rooms by storing
+the invite until the identifier is bound.
