# RCSB_UTILS_EC HISTORY
 10-Mar-2019 V0.10 Initial package version
  6-Apr-2019 V0.11 add mode tree list generation
 10-Apr-2019 V0.12 suppress verbose logging
 17-Apr-2019 V0.13 adjust parent node attributes in node list
 24-Jun-2019 V0.14 update development workflow
 14-Aug-2019 V0.15 improve cache management
 29-Aug-2019 V0.16 add module EnzymeDatabaseProvider()
 23-Nov-2019 V0.17 Move pipeline to py38
 24-Nov-2019 V0.18 add normalize() and exists() methods
  8-Dec-2019 V0.19 parse history records looking for EC replacements
