Update LICENSE.md copyright year to the year the software was made publicly available (instead of when the LICENSE.md file was first created).

hmakelin · hmakelin · commit a7826cc0ed72 · 2022-09-05T18:31:10.000+01:00
diff --git a/LICENSE.md b/LICENSE.md
@@ -1,4 +1,4 @@
-Copyright 2021 Harri Mäkelin
+Copyright (c) 2022 Harri Mäkelin
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-Copyright 2021 Harri Mäkelin`
	`1`	`+Copyright (c) 2022 Harri Mäkelin`
`2`	`2`
`3`	`3`	`Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:`
`4`	`4`