Add license checking github action and update license

Signed-off-by: Daniel Lim Wee Soong <weesoong.lim@gmail.com>

Author: daniellimws

.github/workflows/licensing.yml

@@ -0,0 +1,24 @@
+# Copyright (C) 2017-2021  The SymbiFlow Authors.
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier: ISC
+
+
+name: Licensing
+
+
+on:
+  push:
+  pull_request:
+
+
+jobs:
+  Checks:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - uses: SymbiFlow/actions/checks@main

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-# Copyright (C) 2020  SymbiFlow Authors.
+# Copyright (C) 2020-2021  The SymbiFlow Authors.
 #
 # Use of this source code is governed by a ISC-style
 # license that can be found in the LICENSE file or at

LICENSE

@@ -1,4 +1,4 @@
-Copyright (C) 2017-2020  The Project X-Ray Authors.
+Copyright (C) 2017-2020  The SymbiFlow Authors.
 
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above

Makefile.template

@@ -1,4 +1,4 @@
-# Copyright (C) 2020  SymbiFlow Authors.
+# Copyright (C) 2020-2021  The SymbiFlow Authors.
 #
 # Use of this source code is governed by a ISC-style
 # license that can be found in the LICENSE file or at

conda.mk

@@ -1,4 +1,4 @@
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright (C) 2020-2021  The SymbiFlow Authors.
 #
 # Use of this source code is governed by a ISC-style
 # license that can be found in the LICENSE file or at

mkdir.ps1

@@ -1,4 +1,4 @@
-# Copyright (C) 2020  SymbiFlow Authors.
+# Copyright (C) 2020-2021  The SymbiFlow Authors.
 #
 # Use of this source code is governed by a ISC-style
 # license that can be found in the LICENSE file or at

os.mk

@@ -1,4 +1,4 @@
-# Copyright (C) 2020  The SymbiFlow Authors.
+# Copyright (C) 2020-2021  The SymbiFlow Authors.
 #
 # Use of this source code is governed by a ISC-style
 # license that can be found in the LICENSE file or at

test/check.py

@@ -1,4 +1,13 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2020-2021  The SymbiFlow Authors.
+#
+# Use of this source code is governed by a ISC-style
+# license that can be found in the LICENSE file or at
+# https://opensource.org/licenses/ISC
+#
+# SPDX-License-Identifier:	ISC
 
 # Check that no system packages are found in the environment.
 import sys

touch.ps1

@@ -1,4 +1,4 @@
-# Copyright (C) 2020  SymbiFlow Authors.
+# Copyright (C) 2020-2021  The SymbiFlow Authors.
 #
 # Use of this source code is governed by a ISC-style
 # license that can be found in the LICENSE file or at

wget.ps1

@@ -1,4 +1,4 @@
-# Copyright (C) 2020  SymbiFlow Authors.
+# Copyright (C) 2020-2021  The SymbiFlow Authors.
 #
 # Use of this source code is governed by a ISC-style
 # license that can be found in the LICENSE file or at