updated Python version in pyproject and otherwhere

Author: wwwjfy

CONTRIBUTING.rst

@@ -112,7 +112,7 @@ Before you submit a pull request, check that it meets these guidelines:
 2. If the pull request adds functionality, the docs should be updated. Put
    your new functionality into a function with a docstring, and add the
    feature to the list in README.rst.
-3. The pull request should work for Python 3.5, 3.6, 3.7 and 3.8. Check
+3. The pull request should work for Python 3.6, 3.7, 3.8 and 3.9. Check
    https://github.com/python-gino/gino/actions?query=event%3Apull_request
    and make sure that the tests pass for all supported Python versions.
 

README.rst

@@ -27,7 +27,7 @@ GINO - GINO Is Not ORM - is a lightweight asynchronous ORM built on top of
 SQLAlchemy_ core for Python asyncio_. GINO 1.0 supports only PostgreSQL_ with asyncpg_.
 
 * Free software: BSD license
-* Requires: Python 3.5
+* Requires: Python 3.6
 * GINO is developed proudly with |PyCharm|.
 
 

docs/how-to/faq.rst

@@ -89,7 +89,7 @@ What is aiocontextvars and what does it do?
 
 It is a partial backport of the new built-in module `contextvars
 <https://docs.python.org/3.7/library/contextvars.html>`_ introduced in Python
-3.7. In Python 3.5 and 3.6, ``aiocontextvars`` patches ``loop.create_task()``
+3.7. In Python 3.6, ``aiocontextvars`` patches ``loop.create_task()``
 to copy context from caller as a workaround to simulate the same behavior. This
 is also under discussion in upstream backport project, please read more here:
 https://github.com/MagicStack/contextvars/issues/2