Adding changelog and description of 0.7.6 release

docs/changelog.rst

@@ -1,2 +1,43 @@
 Changelog
 =========
+
+This document describes all the changes in *Objects* framework that were made
+in every particular version.
+
+From version 0.7.6 *Objects* framework strictly follows `Semantic versioning`_
+
+
+Development version
+-------------------
+
+- No features.
+
+0.7.6
+-----
+
+- Adding support of six from 1.7.0 to 1.9.0. 
+- Factory / Singleton providers are free from restriction to operate with 
+  classes only. This feature gives a change to use factory method and 
+  functions with Factory / Singleton providers.
+- All attributes of all entities that have to be protected was renamed using 
+  ``_protected`` manner. 
+- Providers extending was improved by implementing overriding logic in 
+  ``Provider.__call__()`` and moving providing logic into 
+  ``Provider._provide()``.
+- ``NewInstance`` provider was renamed to ``Factory`` provider. 
+  ``NewInstance`` still can be used, but it considered to be deprecated and 
+  will be removed in futher releases.
+- ``@inject`` decorator was refactored to keep all injections in 
+  ``_injections`` attribute of decorated callback. It will give a possibilty to
+  track all the injections of particular callbacks and gives some performance 
+  boost due minimizing number of calls for doing injections.
+- A lot of documentation updates were made.
+- A lot of examples were added.
+- Some minor refactorings were done.
+
+Previous versions
+-----------------
+
+- While *Objects* was in alpha state, changes were not tracked.
+
+.. _Semantic versioning: http://semver.org/