[pkg] fold in changes

CHANGELOG

+0.4.3 Oct 28, 2015:
+  o self-repair the keyring if keys get duplicated. Closes: #7498
+  o catch request exceptions on key fetching. Closes #7410.
+  o Don't repush a public key with different addres
+  o use async events api. Closes #7224.
+  o Use ca_bundle when fetching keys by url.
+  o add logging to fetch_key. Related: #7410.
+  o more verbosity in get_key wrong address log.
+  o don't repush a public key with different address. Related #7420.
+
 0.4.2 Aug 26, 2015:
   o Style changes.
   o Tests updates.

changes/bug-7410_fetch_key

-- catch request exceptions on key fetching

changes/bug-7498_multiple_keys

-- self-repair the keyring if keys get duplicated (Closes: #7485)

changes/bug-address_mixup

-- Don't repush a public key with different address