v0.9: Restructure and move parts to queries library

- Move Action directory to Builder directory
- Use interface and trait for flattened fields from
  queries library
- Add more PHPCS rules and adjust source code accordingly

Add psalm annotations + flattened fields amendmend

• Add first psalm-immutable and psalm-pure annotations
• Additional tests to make sure flattened fields all had
  a sensible type
• Add path coverage to code coverage composer command

v0.8.4: Only update .gitignore if necessary

Generated repositories are added to .gitignore, but
up till now that file was always recreated/written to
again. Now it is only updated when there was a change.

Also adjust a type hint to be more accurate in
InsertOrUpdate query builder.

Improve flattened fields with types

• Coerce values that can sensibly be coerced
• Convert the functions into a trait so they can
  be shared between the three select classes
• Adjust tests accordingly

Adjust repositories generator

Add missing getFlattenedFields functions.

Add flattened fields with types

New functions in select builder class:

• getFlattenedIntegerFields
• getFlattenedFloatFields
• getFlattenedStringFields
• getFlattenedBooleanFields

Adjust interface for flattenFields option

flattenFields is no option anymore, instead there is the fetchAllAndFlatten function.

v0.7.1: Remove template syntax because of PHPStan

PHPStan seems to misinterpret the syntax and there
is no way to give this syntax to psalm while not
causing the errors in PHPStan.

Leverage PHP 7.4 features

• Remove type and nullable annotation options, infer them automatically from property types
• Property types are now mandatory because of this
• Some cleanup in configuration and some more usage of PHP 7.4 features in code

v0.6.9: Improve dev configuration & upgrade PHPStan

- Upgrade to PHPStan 0.12 and make needed changes
- Add PHP 7.4 to Travis
- No changes to usage of this library