Update copyrights for 2021 and fix README typo

Added 2021 to the copyright for all IV_Swinger*.py modules.

Also fixed a small typo in the build_tools/README file

build_tools/README

@@ -30,7 +30,7 @@ Instructions for Mac build (Python 3):
 
        % echo 'export GITHUB="$HOME/GitHub"' >> ~/.bash_profile
 
-  4) Update the version string in $GITHUB/IV_Swinger/python/version.txt
+  4) Update the version string in $GITHUB/IV_Swinger/python3/version.txt
 
   5) Complete all testing using straight Python (this assumes that
      you have installed all of the required Python packages):

python/IV_Swinger.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger.py: IV Swinger control module
 #
-# Copyright (C) 2016, 2017, 2018, 2019, 2020  Chris Satterlee
+# Copyright (C) 2016-2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python/IV_Swinger2.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger2.py: IV Swinger 2 configuration and control module
 #
-# Copyright (C) 2017,2018,2019,2020  Chris Satterlee
+# Copyright (C) 2017-2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python/IV_Swinger2_PV_model.py

@@ -5,7 +5,7 @@
 #
 # IV_Swinger2_PV_model.py: IV Swinger 2 PV modeling module
 #
-# Copyright (C) 2020  Chris Satterlee
+# Copyright (C) 2020, 2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python/IV_Swinger2_gui.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger2_gui.py: IV Swinger 2 GUI application module
 #
-# Copyright (C) 2017,2018,2019,2020  Chris Satterlee
+# Copyright (C) 2017-2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -4597,7 +4597,7 @@ def show_about_dialog(self):
 
    https://github.com/csatt/IV_Swinger
 
-Copyright (C) 2017-2020  Chris Satterlee
+Copyright (C) 2017-2021  Chris Satterlee
 """
         sketch_ver = self.master.ivs2.arduino_sketch_ver
         sketch_ver_str = ""

python/IV_Swinger2_sim.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger2_sim.py: IV Swinger 2 simulation module
 #
-# Copyright (C) 2020  Chris Satterlee
+# Copyright (C) 2020, 2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python/IV_Swinger_PV_model.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger_PV_model.py: IV Swinger PV modeling module
 #
-# Copyright (C) 2020  Chris Satterlee
+# Copyright (C) 2020, 2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python/IV_Swinger_plotter.py

@@ -5,7 +5,7 @@
 #
 # IV_Swinger_plotter.py: IV Swinger plotter module
 #
-# Copyright (C) 2016, 2017, 2019, 2020  Chris Satterlee
+# Copyright (C) 2016-2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python3/IV_Swinger.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger.py: IV Swinger control module
 #
-# Copyright (C) 2016, 2017, 2018, 2019, 2020  Chris Satterlee
+# Copyright (C) 2016-2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python3/IV_Swinger2.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger2.py: IV Swinger 2 configuration and control module
 #
-# Copyright (C) 2017,2018,2019,2020  Chris Satterlee
+# Copyright (C) 2017-2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python3/IV_Swinger2_PV_model.py

@@ -5,7 +5,7 @@
 #
 # IV_Swinger2_PV_model.py: IV Swinger 2 PV modeling module
 #
-# Copyright (C) 2020  Chris Satterlee
+# Copyright (C) 2020, 2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python3/IV_Swinger2_gui.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger2_gui.py: IV Swinger 2 GUI application module
 #
-# Copyright (C) 2017,2018,2019,2020  Chris Satterlee
+# Copyright (C) 2017-2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -4487,7 +4487,7 @@ def show_about_dialog(self):
 
    https://github.com/csatt/IV_Swinger
 
-Copyright (C) 2017-2020  Chris Satterlee
+Copyright (C) 2017-2021  Chris Satterlee
 """
         sketch_ver = self.master.ivs2.arduino_sketch_ver
         sketch_ver_str = ""

python3/IV_Swinger2_sim.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger2_sim.py: IV Swinger 2 simulation module
 #
-# Copyright (C) 2020  Chris Satterlee
+# Copyright (C) 2020, 2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python3/IV_Swinger_PV_model.py

@@ -6,7 +6,7 @@
 #
 # IV_Swinger_PV_model.py: IV Swinger PV modeling module
 #
-# Copyright (C) 2020  Chris Satterlee
+# Copyright (C) 2020, 2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

python3/IV_Swinger_plotter.py

@@ -5,7 +5,7 @@
 #
 # IV_Swinger_plotter.py: IV Swinger plotter module
 #
-# Copyright (C) 2016, 2017, 2019, 2020  Chris Satterlee
+# Copyright (C) 2016-2021  Chris Satterlee
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by