SpongeForge is hard dependency on prior 1.12.2

[HowardZHY]

1fd9eea

This commit made SpongeForge REQUIRED to be installed on older Forge

#69

[KorewaLidesu]

Do you have a log that present the error?
Please upload it via mslo.gs

[HowardZHY]

https://mclo.gs/2QKMpjz

The only errors are

[22:30:33] [main/FATAL] [FML/]: The mod mixinbooter (MixinBooter) requires mods [spongeforge] to be available
[22:30:33] [main/FATAL] [FML/]: Mod mixinbooter (MixinBooter) requires [spongeforge@[7.4.8,)]

[Rongmario]

Fixed in 558f135