[GUSDEV] A comment to SequenceOntology table

[Weichen W. <we...@se...>]

The length of Definition column in SequenceOntology table is 1000. That is 
not enough for the current  so.definition version 1.42. Some of the terms' 
defintions are larger than 1000. For example, term group_II_intron, snoRNA 
and SRP_RNA. Hope the next version will extend the length of this field.

Thanks,
Weichen