[pkg] fold in changes

CHANGELOG

+0.4.0 Jun 8, 2015:
+  o Adapt to new events api on leap.common. Related to #5359.
+  o Add 'fetch_key' method to fetch keys from a URI. Closes #5932.
+  o Clean up API.
+  o Fix call to python-gnupg's verify_file() method. Closes #6022.
+  o KeyManager.put_key now accepts also ascii keys.
+  o Multi uid support. Closes #6212.
+  o Port keymanager to the new soledad async API. Closes #6368.
+  o Return always KeyNotFound failure if fetch keys fails on an unknown error.
+  o Upgrade keys if not successfully used and strict high validation level.
+    Closes #6211.
+  o Use addresses instead of keys for encrypt, decrypt, sign & verify.
+    Closes #6346.
+  o Expose info about the signing key. Closes #6366.
+  o Fetched keys from other domain than its provider are set as 'Weak Chain'
+    validation level. Closes #6815.
+  o Keep old key after upgrade. Closes #6262.
+  o New soledad doc struct for encryption-keys. Closes #6299.
+  o Upgrade key when signed by old key. Closes #6240.
+
 0.3.8 Apr 4, 2014:
   o Properly raise KeyNotFound exception when looking for keys on
     nickserver. Fixes #5415.

changes/bug-4752_error_fetching_keys

-- Return always KeyNotFound failure if fetch keys fails on an unknown error

changes/bug_6022_fix-call-to-verify-file

-  o Fix call to python-gnupg's verify_file() method (#6022).

changes/feature-5932_fetch_keys_uri

-- Add 'fetch_key' method to fetch keys from a URI (closes #5932)

changes/feature-6211_succesfully_used

-- Upgrade keys if not successfully used and strict high validation level (closes: #6211)

changes/feature-6212_multi_uid_support

-- Multi uid support (closes #6212)

changes/feature-6240_signed_key

-- upgrade key when signed by old key (Closes #6240)

changes/feature-6299_new_doc

-- new soledad doc struct for encryption-keys (closes #6299)
-- keep old key after upgrade (closes #6262)

changes/feature-6346_use_addresses

-- Use addresses instead of keys for encrypt, decrypt, sign & verify (closes #6346)

changes/feature-6366_expose_signing_key

-- expose info about the signing key (closes #6366)

changes/feature-6368_async_api

-- Port keymanager to the new soledad async API (Closes 6368)

changes/feature-6815_nicknym_validation_level

--  fetched keys from other domain than its provider are set as 'Weak Chain' validation level (Closes: #6815)

changes/feature-cleanup_api

-- Clean up API

changes/feature-put_key_ascii

-- KeyManager.put_key now accepts also ascii keys

changes/feature_adapt-to-new-events-on-common

-- Adapt to new events api on leap.common. Related to #5359.