docs: add section about compatibility to version 1
docs: add section about compatibility to version 1

For compatibility reasons the murmurhash2_x86_32 functions is also exposed as murmurHash.

MartinHelmut/number-generator,MartinHelmut/number-generator,MartinHelmut/number-generator,MartinHelmut/number-generator,MartinHelmut/number-generator,MartinHelmut/number-generator