Add support for argument default values

FieldBuilder::addArgument() now accepts a 4th defaultValue param

InvalidArgument is ClientAware

The DateTime type validation was not properly propagated as it was missing ClientAware and safe set to true

Support graphql-php v14

v0.5.0

Add Infection badge

Last release for graphql-php v0.x

Insignificant changes

v0.4.0

• Small fixes
• UnionBuilder
• Upgraded dependencies

v0.3.0

Fix readme formatting

v0.2.2

Support webonyx/graphql-php v ^0.13

v0.2.1

Renamed EnumBuilder::createFromName to EnumBuilder::create

BC break but fine as nobody was using it at a time.

v0.2.0

• Introduced scalar DateTime
• namespace changed to SimPod\GraphQLUtils
• Error Formatter and Error classes introduced. See docs.

v0.1.1

Bump graphql-php version