Free/open source roms for the C64

See https://github.com/MEGA65/open-roms

The following copyright notices apply to the entirety of this package,
including each source file, unless otherwise noted in each file or directory.

    Copyright Paul Gardner-Stephen, 2019.
    Copyright Roman Standzikowski (FeralChil64), 2019-2020. 

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.