bulk_writer: changed handling of single-row dataframe parsing to JSON
elastic_update: changed function to return instead of print appData on error
ud_update: Changed nested lists to flat lists, and added start and end character positions
ud_update: major fix to ud parsing, changed regex to remove html tags to only include tags with a maximum of 20 characters in them
elastic_update: set the minimum break between retries from 10 to 30 seconds
elasticizer: implementation of retries for elasticizer function, 10 retries with a break of 30 seconds in between