Fixed NULL pointer error in Connection._get_equote()
update README after the realisation that compat hook can be invoked from the project - see issue #3
bump version to include fix of issue #2 and documentation update
fix issue #4 - change imports in test_notify.py to pass test without psycopg2 compat registered
Merge branch 'master' of https://github.com/chtd/psycopg2cffi
Fixed missing setting of _copysize in cursor.copy_expert.
a test for setting specified size in copy_expert - see issue #5
Allow cffi 0.5, since it works fine and is current.
#6 - bump version
Report connection as closed if internal flag is set or libpq knows that connection is closed.

This fixes problem when connection is closed on backend side and
conn.closed() still reports False, while conn.fileno() would return -1,
indicating that connection is broken.