NCS Navigator MDES Module history
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0.5.0
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- Add `instrument_table?` and `operational_table?` to heuristically
  flag tables as one or the other.
- Fix reference definition for `spec_blood.equip_id`. According to the
  corresponding instrument, it is not a reference to `spec_equipment`,
  but rather a manually-filled field.

0.4.2
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- Add `specification_version` to distinguish from the short version
  names we use for easy reference. (#6)

0.4.1
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- Add separate `omittable?` and `nillable?` subconditions of
  `required?` (#4).

0.4.0
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- Consider element `minOccurs` when determining variable
  requiredness (#2).
- Added disposition codes to the specification. Requires a YAML file
  with all the disposition code values for the MDES version (#3).

0.3.1
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- Correct pattern compilation. XML Schema patterns implicitly must
  match the entire value, so it's necessary to surround the value with
  `^` and `$` when converting to a ruby regular expression.

0.3.0
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- Add foreign key / table reference support, including explicit
  mappings for all ambiguous or unguessable FKs (#1).
- Add Specification#[] for quicker access to a particular table or
  tables.

0.2.0
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- Rename gem to ncs_mdes (from ncs-mdes).
- Embed the VDR transmission XSD since we now have permission to
  distribute the MDES structure.
- Update version 2.0 to be based on 2.0.01.02.

0.1.0
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- Add mdes-console executable.

0.0.1
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- First version. Reads data from VDR transmission schema for MDES 1.2
  and 2.0.