pymsteams async_connectorcard Python 2 incompatibility

[ALERTua]

Clean installation of the latest pymsteams package via "pip install pymsteams" cannot be used on the latest Python 2.7.18

1. Execute "pip install pymsteams"
2. Execute python
3. Execute "import pymsteams"
4. See error

   >>> import pymsteams
   Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "C:\Python27\lib\site-packages\pymsteams\__init__.py", line 268
   async def send(self):
           ^
   SyntaxError: invalid syntax

It would be perfect if the asynchronous code blocks are compatible with Python 2. Also, maybe a simple test that just imports the module at Python 2 environment would suffice to smoke-test this type of issue in the future. Right now I am forced to use the previous pymsteams package frozen forever.

[nsano-rururu]

Maintenance of python2 has been completed. I think it's a good idea to exclude it from support for the latest version.

Some of the libraries you are using should no longer support python 2, so I think it will be difficult to maintain support for python 2 and 3.

[rveachkc]

The async functionality won't work with python 2, due to the requirement of httpx. I'll just update the python version requirements, so python 2 installs will stay on the older versions without async.

[rveachkc]

Version 0.2.1 has been released with an update to the python version requirement.

Version 0.2.0 has been yanked from PyPI, so it will no longer be seen as a valid install candidate.

[ALERTua]

alas, my project is currently limited to Python 2. but thank you anyway.