the latest upstream release
    
    Per NEWS file:
    What's new in psycopg 2.7.7
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    
    - Cleanup of the cursor results assignment code, which might have solved
      double free and inconsistencies in concurrent usage (:tickets:`#346, #384`).
    - Wheel package compiled against OpenSSL 1.0.2q.
    
    What's new in psycopg 2.7.6.1
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    
    - Fixed binary package broken on OS X 10.12 (:ticket:`#807`).
    - Wheel package compiled against PostgreSQL 11.1 libpq.
    
    What's new in psycopg 2.7.6
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    
    - Close named cursors if exist, even if `~cursor.execute()` wasn't called
      (:ticket:`#746`).
    - Fixed building on modern FreeBSD versions with Python 3.7 (:ticket:`#755`).
    - Fixed hang trying to :sql:`COPY` via `~cursor.execute()` in asynchronous
      connections (:ticket:`#781`).
    - Fixed adaptation of arrays of empty arrays (:ticket:`#788`).
    - Fixed segfault accessing the connection's `~connection.readonly` and
      `~connection.deferrable` attributes repeatedly (:ticket:`#790`).
    - `~psycopg2.extras.execute_values()` accepts `~psycopg2.sql.Composable`
      objects (:ticket:`#794`).
    - `~psycopg2.errorcodes` map updated to PostgreSQL 11.
    - Wheel package compiled against PostgreSQL 10.5 libpq and OpenSSL 1.0.2p.
    
    Version: 2.7.7-1