Merge branch 'relations' into 'master'

# Schema

This repository contains information about Crossref’s metadata deposit schema and supports planning for future versions. Details for all supported versions of the Crossref deposit schema are available in the [Crossref support documentation](https://support.crossref.org/hc/en-us/articles/214169586). 

This repository contains information about Crossref’s metadata deposit schema and supports planning for future versions. Details for most supported versions of the Crossref deposit schema are available in the [Crossref support documentation](https://support.crossref.org/hc/en-us/articles/214169586). Documentation for version 5.3.0 is forthcoming.

## Schema versioning

### Examples

We have a growing collection of example XML files for demonstrating and testing the schema. These live in the examples directory (or subdirectories) and are automatically validated.

We have a growing collection of example XML files for demonstrating and testing XML submissions. These live in the examples directory (or subdirectories) and are automatically validated. A 'best practice' directory  (best-practice-examples) has been added to demonstrate best practice for Crossref XML creation.

XML examples are registered with our demonstration DOI prefix (10.32013) and belong to our fake publisher, Society of Metadata Idealists.  Please feel free to add your own examples or request examples for specific situations.

# 0.3.0 Tagged Crossref bundle

2021-09-28

Current versions:

* common5.3.0.xsd (breaking change)

* crossref5.3.0.xsd (breaking change)

* crossref4.8.0.xsd (non-breaking change)

* common4.8.0.xsd (non-breaking change)

* doi_resources4.4.2.xsd

* AccessIndicators.xsd

* clinicaltrials.xsd

* fundref.xsd

* grant_id.0.1.1.xsd

* relations.xsd

New in this release:

* relations.xsd updated to include finances / isFinancedBy relationship

# 0.2.0 Tagged Crossref bundle

2021-07-21

Current versions:

* common5.3.0.xsd (breaking change)

* crossref5.3.0.xsd (breaking change)

* crossref4.8.0.xsd (non-breaking change)

* common4.8.0.xsd (non-breaking change)

* doi_resources4.4.2.xsd

* AccessIndicators.xsd

* clinicaltrials.xsd

* fundref.xsd

* grant_id.0.1.1.xsd

* relations.xsd

JATS schema include:

JATS-journalpublishing1-3d2-elements.xsd JATS-journalpublishing1-mathml3-3d2-elements.xsd JATS-journalpublishing1-mathml3.xsd JATS-journalpublishing1.xsd

New in this release:

* crossref5.3.0.xsd

* common5.3.0xsd

* crossref4.8.0.xsd

* common4.8.0.xsd

* grant_id.0.1.1.xsd

Added to 4.8.0:

* refactoring of schema

* relax regex rules for email addresses

* allow ISBN beginning with 979

* update imported JATS schema to v. 1.3

Added to 5.3.0

Support for ROR and other organization identifiers:

- replace <affiliation> tag  with <affilations>  to support new affiliations structure

- add  <institution_id> element to support ROR and other org IDs

- make either <institution_id> or <institution_name> required within <institution>

Added to grant v. 0.1.1

- remove investigators requirement

- fix regex for <funder-id>

- add required 'version' attribute to <doi_batch>

# 0.1.1 Tagged Crossref bundle

2019-08-07

Current versions:

- AccessIndicators.xsd

- clinicaltrials.xsd

- common4.4.2.xsd

- crossref4.4.2.xsd

- doi_resources4.4.2.xsd

- fundref.xsd

- grant_id.0.0.1.xsd

- relations.xsd

JATS schema include:

- JATS-journalpublishing1-elements.xsd

- JATS-journalpublishing1-mathml3-elements.xsd

- JATS-journalpublishing1-mathml3.xsd

- JATS-journalpublishing1.xsd

New in this release:

- common4.4.2.xsd

- crossref4.4.2.xsd

- doi_resources4.4.2.xsd

- grant_id.0.0.1.xsd

Released deposit schema v. 4.4.2 updated with JATS files, first version of Grant ID schema

Added to 4.4.2:

- support for Pending Publication

- support for DUL

- support for JATS 1.2 abstracts

- add abstract support to dissertations, reports, and allow multiple abstracts wherever available

- add support for multiple dissertation authors

- add acceptance_date element to journal article, books, book chapter, conference paper

# 0.1.0 First tagged Crossref bundle

2019-06-28

                        <xsd:enumeration value="isBasisFor"/>         <!-- isBasedOn -->

                        <xsd:enumeration value="requires"/>           <!-- isRequiredBy -->

                        <xsd:enumeration value="isRequiredBy"/>       <!-- requires --> 

                         <!-- TODO added for Grant testing -->

                        <xsd:enumeration value="finances"/>       <!-- isFinancedBy --> 

                        <xsd:enumeration value="isFinancedBy"/>       <!-- finances --> 

                    </xsd:restriction>

                </xsd:simpleType>