a bug fix to column allele_string in transcript_variation table. The error is caused by a deletion, such as TTG/- in CTTGTT so the allele_string should be LV/L rather than LV/-

Made regulatory_factor and regulatory_feature part of enum in object_xref so that they can have xrefs assigned to them.

Changed name and structure of regulatory_factor_transcript.

deprecated throw

replaced do with eval require for better error messages. Added optional argument to load_all to write to stderr what configuration file is being used. This was always reported before but defualt is now not to