Revision history for PICA::Data
2.12 2023-08-28T08:01:58Z
    - Add explicit PICA Patch parser and writer
    - Fix parsing plain $$ (#136)
    - Fix diff for multiple fields of same identifier
    - Avoid circular dependency
2.11 2023-08-18T05:19:26Z
    - Add parser method: all
2.10 2023-08-09T14:01:25Z
    - Add PICA Import format parser (#129)
    - Add parser counter (method: count)
2.09 2023-04-14T07:03:05Z
    - Remove duplicate fields from patches
    - Add field methods clone and equal
2.08 2023-03-28T07:09:39Z
    - Let pica_fields return a new array reference
    - Document pica_split
    - Make "norm(alized)" alias for "plus" format
2.06 2023-01-31T09:15:07Z
    - Fix default --level value in command line interface
    - Add PICA::Data::Field
2.05 2022-11-15T07:41:31Z
    - Add functions pica_sort_subfields and parse_subfield_schedule
2.04 2022-09-20T09:31:32Z
    - Add option level to pica_split
    - Support writing annotated PICA / PICA Patch in normalized and binary form
2.03 2022-04-20T10:23:58Z
    - Add PICA Import format writer
2.02 2022-03-24T08:13:38Z
    - Fix support of generic writer
2.01 2021-12-10T13:00:56Z
    - picadata: keep unchanged fields with modify -a
    - picadata: add command 'join'
    - Add PIXML parser und writer
2.00 2021-12-09T09:29:42Z
    - Fix Unicode output of field labels
    - PICA Path: allow dot alternative to $
    - PICA Path: allow star as subfield wildcard
    - PICA Path: field without occurrence will only match occurrence zero, use /* for any occurrence
    - Remove option position_as_occurrence, use '/' for occurences by default
    - picadata: colorize output of (sub)fields schedules
    - Document methods to append, update and remove fields and extend update method
    - picadata: add command 'modify'
1.35 2021-11-05T10:13:05Z
    - Add methods to append, update and remove fields in record (#118)
1.34 2021-10-05T07:16:02Z
    - support x-counter field identifiers in schemas
    - remove occurrence zero (/00) in schemas
1.33 2021-09-29T14:14:11Z
    - fix treatment of occurrence ranges in schema builder
1.32 2021-09-29T09:44:13Z
    - picadata: change color blue to magenta
    - schema builder: rename 'total' number to 'records'
      to align with Avram specification 0.7.0
1.31 2021-09-24T08:34:41Z
    - picadata: add command 'filter'
    - add PICA Path method alias 'match'
    - add record count to schema builder
1.30 2021-08-17T16:46:36Z
    - picadata: Fix UTF-8 output of schema labels
    - picadata: allow to explain full Avram schema
    - picadata: add command 'get'
    - picadata: rename command 'split' to 'levels'
    - Add method pica_data and fix pica_guess
1.29 2021-07-22T08:51:03Z
    - picadata: Fix detection of terminal
1.28 2021-07-06T09:52:24Z
    - Add method to get subfields as multihash (#98)
    - picadata: fix option --number (#111)
    - picadata: support parsing multiple formats (#112)
1.27 2021-06-23T07:23:14Z
    - Add accessor: empty. Fixes counting.
    - Remove parser option 'bless', always return blessed record (#107, BREAKING CHANGE)
1.26 2021-06-19T16:51:01Z
    - Support diff/patch in CLI
    - Support option --unknown in build/fields/explain 
1.25 2021-06-16T14:18:46Z
    - Implement occurrence ranges (#96) 
    - Add option position_as_occurrence (see #66)
1.24 2021-06-07T08:51:52Z
    - Add method to split record
    - Make path optional in pica_fields
    - picadata: allow to parse multiple files
    - picadata: load schema from PICA_SCHEMA for more commands
    - Extend schema checking to level 1 and level 2
1.23 2021-06-03T10:19:24Z
    - Move picadata implementation into module App::picadata
    - Rewrite picadata to use commands (#101)
    - Add picadata command 'explain' (#99)
    - picadata: read schema from environment variable PICA_SCHEMA if needed
    - Remove PICA::Writer::[Sub]fields
1.22 2021-05-26T12:54:35Z
    - Add PICA::Writer::Subfields
    - Support parsing WinIBW download format (#34)
1.21 2021-05-18T09:23:25Z
    - Add function pica_annotation
    - Add accessor ->id and function pica_id
    - Rename option annotated to annotate
    - Support using field annotations for schema checking (#89)
    - picadata: add option -a/-A/-annotated (#94)
    - picadata: ignore empty records
    - picadata: Expect UTF-8 on STDIN (#92)
    - picadata: exit code on validation errors (#95)
1.20 2021-05-12T15:27:58Z
    - Implement record sorting (#59)
    - Refactor PPXML writer (#84)
1.19 2021-05-10T13:22:39Z
    - picadata: get schema via URL (#77)
    - Treat occurrence zero equal to none (#88)
1.18 2021-04-30T10:54:49Z
    - Support parsing field annotations (#86)
1.17 2021-04-23T08:16:14Z
    - Support checking and writing field annotations (#86)
1.16 2021-03-02T16:19:47Z
    - Move clean_pica to PICA::Schema and add add option ignore_subfields
    - Extend method/function field_identifier to occurrence ranges
1.15 2021-03-01T10:56:48Z
    - Add clean_pica to check PICA data structure (#82)
    - Rename PICA::Schema::Error to PICA::Error
1.14 2020-07-28T08:42:47Z
    - picadata: allow to repeat --path
    - picadata: don't emit records by default
    - PICA Plain parser also supports ƒ as subfield indicator (#67)
1.13 2020-07-14T13:06:18Z
    - Add method to abbreviate schemas (-B in picadata)
    - picadata: remove shorthand -f (#73)
    - picadata: allow whitespaces in path expressions (#74)
1.12 2020-07-13T12:13:55Z
    - picadata: add option --number
    - Rewrite PPXML Writer
    - Internally use Unicode strings
1.11 2020-07-01T10:57:27Z
    - picadata: --count does not echo records by default
    - picadata: detect ndjson file extension
    - Fix PICA::Schema::Builder to properly encode true on JSON
1.10 2020-06-25T21:00:31Z
    - picadata: support selecting subfield values
1.09 2020-06-24T08:42:49Z
    - Support syntax highlighting
    - picadata: guess serialization from filename
    - picadata: support multiple path expressions
    - picadata: make -p and -f optional
1.08 2020-06-10T13:27:29Z
    - Require Perl >= 5.14.1
    - Fix installation of picadata script
    - Make picadata detect missing files
    - Use perltidy and tidyall for coding style
1.07
    - rename pica-validate to picadata
    - support filtering by multiple path expressions (pica_fields)
    - Add PICA JSON Writer and serializer
    - Add PICA::Path accessors
1.06  2020-04-20 11:20:40 CEST
    - fix return of empty values
1.05  2020-03-23 10:59:47 CET
    - fix version numbers
1.04  2020-03-23 10:47:47 CET
    - remove faulty sorting from PICA::Writer modules
1.03  2020-02-11 12:47:52 CET
    - Fix zero items/holdings bug
    - Add pica-validate command line script
1.02  2020-02-06 12:16:32 CET
    - Support parsing PICA XML with namespace prefix
1.01  2019-12-18 09:20:11 CET
    - add match function and documentation of matching rules
1.00  2019-10-01 18:43:42 CEST
    - fix .travis.yml
    - gh#47 Drop usage of * for wildcard from PICA::PATH
    - fix typo in pod
0.37  2018-05-23 08:46:19 CEST
    - Extend Schema validation with positions, patterns, occurrences etc.
    - Include Schema information in XML Writer
0.36  2018-02-25 13:31:30 CET
    - Modify schema format to align with Avram
    - Add PICA::Schema::Builder and extend PICA::Schema
    - align PICA::Schema with Avram specification
    - add PICA::Schema::Builder
0.35  2018-01-29 16:29:52 CET
    - add PICA::Schema
    - add parsers and writers to documentation
    - add Generic writer
    - check if occurrence is defined 
    - add PICA::Writer::PPXML to documentation
    - fix version number in cpanfile
0.34  2017-11-18 13:04:04 CET
    - add dependencies to cpanfile
    - use XML::Writer to generate XML files
    - add support for 3-digit occurrences 
0.33  2017-07-10 13:19:46 CEST
    - new writer PPXML
    - list denpencies in cpanfile
0.32  2017-06-28 14:21:36 CEST
    - sort record before printing
    - updated travis.yml with use of --skip-installed
    - skip faulty fields by default, add strict option in parsers
    - fix IO layer for XML parser in test file
0.31  2016-02-19 10:13:44 CET
    - refactor parser
    - add PICA::Path::record_field and ::record_subfields
0.30  2016-02-18 20:19:47 CET
    - add parser for PPXML (PICA+ XML format variant of DNB)
0.29  2016-02-17 09:17:17 CET
    - skip empty records when parsing
0.28  2016-02-16 14:58:57 CET
    - add new binary PICA format
0.27  2015-05-07 16:08:19 CEST
    - bless holdings and items (close #11)
0.26  2015-02-05 12:17:28 CET
    - fix parsing double-encoded $$ in plain format
    - support writing to scalar
    - new methods write and string
0.25  2015-02-05 10:26:29 CET
    - documentation
0.24  2015-01-16 14:25:24 CET
    - new function pica_xml_struct
    - support blessing of records
0.23  2014-09-19 12:12:23 CEST
    - removed dependency on Moo (close #6)
    - fixed PICA::Parser::Plus
0.22  2014-09-18 14:42:01 CEST
    - extend PICA path expressions
    - fix dependency
0.21  2014-09-18 11:06:29 CEST
    - added pica_holdings and pica_items (close #1)
0.2001  2014-09-17 15:17:28 CEST
    - added missing version numbers
0.20  2014-09-17 15:05:55 CEST
    - split from Catmandu::PICA after heavy refactoring