RELEASE V0.9.0

Author: sy2002

VERSIONS.md

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+Version 0.9.0 - January, 9 2023
+===============================
+
+After being in development since April 5, 2021 while being in a constant
+"alpha state" with continuous changes and refactorings, Version 0.9.0 is the
+**first stable version of the MiSTer2MEGA65 (M2M) framework**.
+
+The first production quality core that is based on M2M is the
+[Commodore 64 for MEGA65](https://github.com/MJoergen/C64MEGA65/tree/M2M-V0.9).
+Additionally there is a work-in-progress
+[Apple II core](https://github.com/lydon42/Apple-II_MEGA65/tree/progress)
+based on M2M. The main reason why we are currently using "Version 0.9"
+(0.9.x) for the M2M framework instead of "Version 1.0" is that there is not
+enough documentation available, yet. If you have a look at the
+[MiSTer2MEGA65 Wiki](https://github.com/sy2002/MiSTer2MEGA65/wiki)
+then you will notice, that there are many gaps in the documentation.
+
+This should not discourage you from using the MiSTer2MEGA65 framework right
+now to port MiSTer cores and other cores to the MEGA65. You can use the
+source code of the
+[Commodore 64 for MEGA65](https://github.com/MJoergen/C64MEGA65/tree/M2M-V0.9)
+as your "user's manual" and "reference handbook" for the M2M framework;
+additionally to the existing
+[Wiki pages](https://github.com/sy2002/MiSTer2MEGA65/wiki).
+For being able to actually use the C64 core's source code as your
+documentation of how to use the M2M framework, we added a tag called
+`M2M-V0.9` to the GitHub repository of the
+[Commodore 64 for MEGA65](https://github.com/MJoergen/C64MEGA65/tree/M2M-V0.9).
+The tag is necessary, because Version 4 of the C64 core was based on an
+earlier version of the M2M framwork and only from the tag `M2M-V0.9` on the
+C64 core is aligned with Version 0.9 of M2M.