Update license year

pllim · web-flow · commit c99e8e7a9e6f · 2021-09-22T10:14:12.000-04:00
[ci skip]
diff --git a/LICENSE.rst b/LICENSE.rst
@@ -1,4 +1,4 @@
-Copyright (c) 2014-2020, Astropy Developers
+Copyright (c) 2014-2021, Astropy Developers
 
 All rights reserved.
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-Copyright (c) 2014-2020, Astropy Developers`
	`1`	`+Copyright (c) 2014-2021, Astropy Developers`
`2`	`2`
`3`	`3`	`All rights reserved.`
`4`	`4`