Add changelog entry and sources definition for AuthEncoding.

CHANGES.rst

@@ -21,6 +21,7 @@ Features Added
 - Updated distributions:
 
   - AccessControl = 4.0a2
+  - AuthEncoding = 4.0.0
 
 Restructuring
 +++++++++++++

requirements.txt

 -e git+https://github.com/zopefoundation/Zope.git@master#egg=Zope2
 AccessControl==4.0a2
 Acquisition==4.2.2
+AuthEncoding==4.0.0
 BTrees==4.3.1
 DateTime==4.1.1
 DocumentTemplate==2.13.2

sources.cfg

@@ -6,6 +6,7 @@ github_push = git@github.com:zopefoundation
 # Zope2-specific
 AccessControl = git ${remotes:github}/AccessControl pushurl=${remotes:github_push}/AccessControl branch=master
 Acquisition = git ${remotes:github}/Acquisition pushurl=${remotes:github_push}/Acquisition
+AuthEncoding = git ${remotes:github}/AuthEncoding pushurl=${remotes:github_push}/AuthEncoding
 DateTime = git ${remotes:github}/DateTime pushurl=${remotes:github_push}/DateTime
 DocumentTemplate = git ${remotes:github}/DocumentTemplate pushurl=${remotes:github_push}/DocumentTemplate
 ExtensionClass = git ${remotes:github}/ExtensionClass pushurl=${remotes:github_push}/ExtensionClass