Added Sequence class for legacy support
Added Sequence class for legacy support

Sequence has been renamed to Block to be more descriptive.

tapiralec/Fungus,snozbot/fungus,inarizushi/Fungus,RonanPearce/Fungus,Nilihum/fungus,kdoore/Fungus,FungusGames/Fungus,lealeelu/Fungus