* see library tables; copy some to feature output ? (lib_feat links)  
 
   * rename this database id to something sensible:
    "FlyBase Annotation IDs":CG2671-PD,  e.g. to FBannot: or FBAnID:CG...

   * mito chromosome: (rename to standard name: Mt) mapchr_pattern
  feature_id |           name            |        uniquename         | dbxref_id |    type    | seqlen | type_id | organism_id | is_analysis
   10711770 | dmel_mitochondrion_genome | dmel_mitochondrion_genome |    671272 | chromosome |  19517 |     204 |           1 | f

    * drop these old release chrs:
    (X..2R)_r3	chromosome_arm 
    2Rnew_11460001	chromosome_arm