Fix requirements

Add missing packages to requirements.txt / test-requirements.txt,
so that it works with both Python 3 and Python 2.
Replace nose with pytest

Author: Lorak-mmk

.github/workflows/build-push.yml

@@ -7,7 +7,7 @@ env:
  CIBW_TEST_COMMAND_LINUX: "pytest --import-mode append {project}/tests/unit -k 'not (test_connection_initialization or test_cloud)' && EVENT_LOOP_MANAGER=gevent pytest --import-mode append {project}/tests/unit/io/test_geventreactor.py && EVENT_LOOP_MANAGER=eventlet pytest --import-mode append {project}/tests/unit/io/test_eventletreactor.py "
  CIBW_TEST_COMMAND_MACOS: "pytest --import-mode append {project}/tests/unit -k 'not (test_multi_timer_validation or test_empty_connections or test_connection_initialization or test_timer_cancellation or test_cloud)' "
  CIBW_TEST_COMMAND_WINDOWS: "pytest --import-mode append {project}/tests/unit  -k \"not (test_deserialize_date_range_year or test_datetype or test_libevreactor or test_connection_initialization or test_cloud)\" "
- CIBW_BEFORE_TEST: "pip install -r {project}/test-requirements.txt pytest"
+ CIBW_BEFORE_TEST: "pip install -r {project}/test-requirements.txt"
  CIBW_BEFORE_BUILD_LINUX: "rm -rf ~/.pyxbld && yum install -y libffi-devel libev libev-devel openssl openssl-devel"
  CIBW_ENVIRONMENT: "CASS_DRIVER_BUILD_CONCURRENCY=2 CFLAGS='-g0 -O3'"
  CIBW_SKIP: cp35* cp36* *musllinux*

requirements.txt

@@ -1,6 +1,6 @@
 geomet>=0.1,<0.3
 six >=1.9
-futures <=2.2.0
+futures==3.4.0; python_version < '3.0.0'
 # Futures is not required for Python 3, but it works up through 2.2.0 (after which it introduced breaking syntax).
 # This is left here to make sure install -r works with any runtime. When installing via setup.py, futures is omitted
 # for Python 3, in favor of the standard library implementation.

test-requirements.txt

@@ -1,12 +1,12 @@
 -r requirements.txt
 scales
-nose
+pytest
 mock>1.1
 pytz
 sure
 pure-sasl
-twisted[tls]; python_version >= '3.5'
-twisted[tls]==19.2.1; python_version < '3.5'
+twisted[tls]; python_version >= '3.5' or python_version < '3.0'
+twisted[tls]==19.2.1; python_version < '3.5' and python_version >= '3.0'
 gevent>=1.0; platform_machine != 'i686' and platform_machine != 'win32'
 gevent==20.5.0; platform_machine == 'i686' or platform_machine == 'win32'
 eventlet
@@ -17,3 +17,4 @@ backports.ssl_match_hostname; python_version < '2.7.9'
 futurist; python_version >= '3.7'
 asynctest; python_version >= '3.5'
 ipaddress; python_version < '3.3.0'
+pyyaml