Added MapYAMLParser.

Updated FulmiCollection.
Removed unnecessary nullity annotations.
Remover org.joor.Reflect dependency since rarely used.
Fixed CallableYAMLParser saving static fields.
Fixed getParsers() concurrent modification exception.
Fixed various bugs.

src/main/java/it/fulminazzo/yamlparser/objects/configurations/FileConfiguration.java

@@ -212,7 +212,7 @@ public static <O, E extends Enum<E>> YAMLParser<O> getParser(@Nullable Class<O>
      * @return the parsers
      */
     public static @NotNull LinkedList<YAMLParser<?>> getParsers() {
-        if (!parsers.isEmpty()) {
+        if (!parsers.isEmpty() && !(parsers.get(parsers.size() - 1) instanceof SerializableYAMLParser)) {
             parsers.removeIf(s -> s instanceof SerializableYAMLParser);
             parsers.add(new SerializableYAMLParser());
         }