Fix CI (#1651)

* Support py36 through py39

* Remove usage of cytoolz

* Update tox

* Add a get set for summaries

* Support get/set

* Restrict cytoolz

* Move cytoolz up the dependency list

* Move cytoolz up the dependency list

* Add cython

* Black

* Remove from requirements

* Add cython

* Remove cython from setup

* Remove cython from setup

* Add cython

* set cytoolz version

requirements.txt

@@ -1,7 +1,8 @@
 blake2b-py
-cytools<0.12.0
 coloredlogs>=10.0
 coincurve>=13.0.0
+cython
+cytoolz<0.12.0
 asn1crypto>=0.22.0
 configparser>=3.5.0
 coverage>6.0

setup.py

@@ -53,9 +53,7 @@ REQUIRED = get_requirements()
 TESTS_REQUIRE = ["mypy==0.782", "pytest>=3.6.0", "pytest_mock", "pytest-cov"]
 
 # What packages are optional?
-EXTRAS = {
-    # 'fancy feature': ['django'],
-}
+EXTRAS = {}
 
 # If version is set to None then it will be fetched from __version__.py
 VERSION = None