Minor release: v3.1.0

Bug fixes

• #239, Fixed error message and type check per application
• When declaring arrays in the JDL (for languages, testFrameworks, etc.), braces didn't really work, this is fixed, the two possible syntaxes are languages [] or languages [fr, en]. braces are mandatory
• Creating directories failed on windows
• Added the entities for each exported JDL application
• @ruddell fixed the relationships when not selecting injected fields

What's new

• The migration to chevrotain is finally over! Which gets us more control over the parsing system (and more tests, coverage, speed when developing features)
• Annotations for options are implemented:

@dto(mapstruct)
@service(serviceClass)
entity A

• The jhipsterVersion property for applications is deprecated and will be removed in the next major release
• When exporting entities to JDL, the table name is now only exported as long as it's not the same as the entity name
• #242, required relationships from/to the same entity are forbidden
• #243, constrained the use of no as database type (from the generator)
• #244, TextBlob only have required as constraint (from the generator)
• API:
  • The JDLObject now has loop methods over entities, applications etc.

Huge thanks to @bd82 for his tremendous help proposing the migration and getting it done!