* Replacement of the BGM in the sea biome (by Andr06)
* Modification of BGM credits in README.md
* Replacement of the BGM name by the title chosen by its composer in all languages
* Update BGM loop point for biome 'SEA'
Instead of using the recommended LUFS of -23, use the LUFS of -14 used by Youtube
And locking in a maximum peak value of -1.0dB to avoid the saturation still present at -14 LUFS for some tracks