v1.0.0

https://central.sonatype.com/artifact/io.github.malczuuu.problem4j/problem4j-core/1.0.0

1. Maven:

   <dependencies>
       <dependency>
           <groupId>io.github.malczuuu.problem4j</groupId>
           <artifactId>problem4j-core</artifactId>
           <version>1.0.0</version>
       </dependency>
   </dependencies>

2. Gradle (Groovy or Kotlin DSL):

   dependencies {
       implementation("io.github.malczuuu.problem4j:problem4j-core:1.0.0")
   }

Added

• Initial model implementing RFC 7807.