misc: update some dates

apps/about.c

@@ -89,7 +89,7 @@ static void init_default(void) {
 		sprintf(version_str, "ToaruOS %s", u.release);
 	}
 
-	copyright_str[0] = "(C) 2011-2019 K. Lange, et al.";
+	copyright_str[0] = "(C) 2011-2020 K. Lange, et al.";
 	copyright_str[1] = "-";
 	copyright_str[2] = "ToaruOS is free software released under the";
 	copyright_str[3] = "NCSA/University of Illinois license.";

apps/terminal.c

@@ -1,7 +1,7 @@
 /* vim: tabstop=4 shiftwidth=4 noexpandtab
  * This file is part of ToaruOS and is released under the terms
  * of the NCSA / University of Illinois License - see LICENSE.md
- * Copyright (C) 2013-2018 K. Lange
+ * Copyright (C) 2013-2020 K. Lange
  *
  * Terminal Emulator
  *
@@ -2179,7 +2179,7 @@ static void _menu_action_toggle_free_size(struct MenuEntry * self) {
 
 static void _menu_action_show_about(struct MenuEntry * self) {
 	char about_cmd[1024] = "\0";
-	strcat(about_cmd, "about \"About Terminal\" /usr/share/icons/48/utilities-terminal.bmp \"ToaruOS Terminal\" \"(C) 2013-2018 K. Lange\n-\nPart of ToaruOS, which is free software\nreleased under the NCSA/University of Illinois\nlicense.\n-\n%https://toaruos.org\n%https://github.com/klange/toaruos\" ");
+	strcat(about_cmd, "about \"About Terminal\" /usr/share/icons/48/utilities-terminal.bmp \"ToaruOS Terminal\" \"(C) 2013-2020 K. Lange\n-\nPart of ToaruOS, which is free software\nreleased under the NCSA/University of Illinois\nlicense.\n-\n%https://toaruos.org\n%https://github.com/klange/toaruos\" ");
 	char coords[100];
 	sprintf(coords, "%d %d &", (int)window->x + (int)window->width / 2, (int)window->y + (int)window->height / 2);
 	strcat(about_cmd, coords);