Introduce CustomConversions [DATAJDBC-235]

[spring-projects-issues]

Mark Paluch opened DATAJDBC-235 and commented

Introduce CustomConversions and SimpleTypeHolder derived from conversions like it's done in the other store modules

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Issue Links:

• DATAJDBC-229 Add java.util.UUID into simpleTypeHolder
  ("is depended on by")
• DATAJDBC-148 register custom types
  ("is duplicated by")
• DATAJDBC-239 Annotation for sql type

Referenced from: pull request #78

[spring-projects-issues]

Mark Paluch commented

Review feedback incorporated