Re-add pyjson5.__doc__

src/_exports.pyx

diff --git a/src/_exports.pyx b/src/_exports.pyx
index 64500a0..fc4b4b2 100644
--- a/src/_exports.pyx
+++ b/src/_exports.pyx
@@ -1,4 +1,4 @@
-global DEFAULT_MAX_NESTING_LEVEL, __version__, __all__
+global DEFAULT_MAX_NESTING_LEVEL, __all__, __author__, __doc__, __license__, __version__
 
 DEFAULT_MAX_NESTING_LEVEL = 32
 '''
@@ -618,3 +618,7 @@
 )
 
 __doc__ = PyUnicode_FromKindAndData(PyUnicode_1BYTE_KIND, LONGDESCRIPTION, LONGDESCRIPTION_LENGTH)
+
+__license__ = 'Apache-2.0'
+
+__author__ = '2018-2021 René Kijewski <rene.[surname]@fu-berlin.de>'

src/pyjson5/__init__.py

diff --git a/src/pyjson5/__init__.py b/src/pyjson5/__init__.py
index 08aeed9..92a1511 100644
--- a/src/pyjson5/__init__.py
+++ b/src/pyjson5/__init__.py
@@ -1 +1,2 @@
 from .pyjson5 import *
+from .pyjson5 import __all__, __author__, __doc__, __license__, __version__