+ marc_leader shouldn't really be included in hash returned by data_structure
+ add checks for search directive in normalization to parser
+ lookup to another input file
-- fix-length fields (<100) support
++ support splitting of config yml to multiple files
++ add set and get to create in-memory lookup
++ support marc_remove('*')
++ fix-length fields (<100) support [2.29]
++ work without indexers installed or enabled [2.30]
++ simpliest possible conf/llin.yml as example
+- load_ds/save_ds should use on-disk hash to preserve inodes
+- leader(position,...), indicator(field,nr) nr=1|2 for MARC input
+- validate should ignore modify_file
- add option to specify output marc path in config.yml
-- support splitting of config yml to multiple files
- add dBase input format
- remove delimiters characters from index and query entered
- delete unused files in database directories