Bump version to 3.1.0

Add changelog and bump version to 3.0.0

Bump version to 3.0.0b4 and update CHANGES

python-ldap#158

Bump version to 3.0.0b3

Update CHANGES for 3.0.0b2

Accept more error messages in test_tls_ext_noca

OpenSSL 1.0, 1.1, and NSS return different error messages for untrusted
certificate and missing CA.

python-ldap#92
Closes: python-ldap#87
Signed-off-by: Christian Heimes <cheimes@redhat.com>

use single quotes

prepare release 2.5.1

* The methods SSSResponseControl.decodeControlValue() and

  VLVResponseControl.decodeControlValue() now follow the coding
  convention to use camel-cased ASN.1 name as class attribute name.
  The old class names are still set for back-ward compability
  but should not be used in new code because they might be removed
  in a later release.
* removed SSSRequestControl from ldap.controls.KNOWN_RESPONSE_CONTROLS

prepare release 2.4.45