MAINT: Bumping minimum required astropy version to 4.1

Author: bsipocz

CHANGES.rst

@@ -189,6 +189,8 @@ Infrastructure, Utility and Other Changes and Additions
 
 - Removed deprecated function ``utils.download_list_of_fitsfiles()``. [#2594]
 
+- Versions of astropy <4.1 are no longer supported. [#2602]
+
 
 
 0.4.6 (2022-03-22)

README.rst

@@ -43,7 +43,7 @@ Installation and Requirements
 -----------------------------
 
 Astroquery works with Python 3.7 or later.
-As an `astropy`_ affiliate, astroquery requires `astropy`_ version 4.0 or later.
+As an `astropy`_ affiliate, astroquery requires `astropy`_ version 4.1 or later.
 
 astroquery uses the `requests <https://requests.readthedocs.io/en/latest/>`_
 module to communicate with the internet.  `BeautifulSoup

docs/index.rst

@@ -85,7 +85,7 @@ Astroquery works with Python 3.7 or later.
 The following packages are required for astroquery installation & use:
 
 * `numpy <http://www.numpy.org>`_ >= 1.16
-* `astropy <http://www.astropy.org>`__ (>=4)
+* `astropy <http://www.astropy.org>`__ (>=4.1)
 * `pyVO`_ (>=1.1)
 * `requests <https://requests.readthedocs.io/en/latest/>`_
 * `keyring <https://pypi.python.org/pypi/keyring>`_

setup.cfg

@@ -162,7 +162,7 @@ python_requires = >=3.7
 
 install_requires=
    numpy>=1.16
-   astropy>=4.0
+   astropy>=4.1
    requests>=2.4.3
    beautifulsoup4>=4.3.2
    html5lib>=0.999

tox.ini

@@ -31,7 +31,7 @@ deps =
 
 # mpl while not a dependency, it's required for the tests, and would pull up a newer numpy version if not pinned.
 
-    oldestdeps: astropy==4.0
+    oldestdeps: astropy==4.1
     oldestdeps: numpy==1.16
     oldestdeps: matplotlib==3.3.*
     oldestdeps: pyvo==1.1