prepare release v7.0

Author: c-sp

CHANGELOG.md

@@ -1,4 +1,4 @@
-## [master](https://github.com/c-sp/gameboy-test-roms)
+## [v7.0](https://github.com/c-sp/gameboy-test-roms/releases/tag/v7.0) *(2024-02-25)*
 
 - add [MBC3 Tester:40065adab0](https://github.com/EricKirschenmann/MBC3-Tester-gb/tree/40065adab0)
   *(2021-03-02)*

README.md

@@ -114,6 +114,7 @@ suites.
 
 Readme by release version:
 
+* [Readme v7.0](https://github.com/c-sp/gameboy-test-roms/blob/v7.0/README.md)
 * [Readme v6.0](https://github.com/c-sp/gameboy-test-roms/blob/v6.0/README.md)
 * [Readme v5.2](https://github.com/c-sp/gameboy-test-roms/blob/v5.2/README.md)
 * [Readme v5.1](https://github.com/c-sp/gameboy-test-roms/blob/v5.1/README.md)