Dart 2.0 release prep (#6759)

* Dart - pubspec.yaml shouldn't contain authors section anymore - it's unused

* Dart - update CHANGELOG.md

* Dart - update test and publish scripts

dart/test/monster_test.fbs

@@ -0,0 +1,154 @@
+// test schema file
+
+include "include_test1.fbs";
+
+namespace MyGame;
+
+table InParentNamespace {}
+
+namespace MyGame.Example2;
+
+table Monster {}  // Test having same name as below, but in different namespace.
+
+namespace MyGame.Example;
+
+attribute "priority";
+
+/// Composite components of Monster color.
+enum Color:ubyte (bit_flags) {
+  Red = 0, // color Red = (1u << 0)
+  /// \brief color Green
+  /// Green is bit_flag with value (1u << 1)
+  Green,
+  /// \brief color Blue (1u << 3)
+  Blue = 3,
+}
+
+enum Race:byte {
+  None = -1,
+  Human = 0,
+  Dwarf,
+  Elf,
+}
+
+union Any { Monster, TestSimpleTableWithEnum, MyGame.Example2.Monster }
+
+union AnyUniqueAliases { M: Monster, TS: TestSimpleTableWithEnum, M2: MyGame.Example2.Monster }
+union AnyAmbiguousAliases { M1: Monster, M2: Monster, M3: Monster }
+
+struct Test { a:short; b:byte; }
+
+table TestSimpleTableWithEnum (csharp_partial, private) {
+  color: Color = Green;
+}
+
+struct Vec3 (force_align: 8) {
+  x:float;
+  y:float;
+  z:float;
+  test1:double;
+  test2:Color;
+  test3:Test;
+}
+
+struct Ability {
+  id:uint(key);
+  distance:uint;
+}
+
+struct StructOfStructs {
+  a: Ability;
+  b: Test;
+  c: Ability;
+}
+
+table Stat {
+  id:string;
+  val:long;
+  count:ushort (key);
+}
+
+table Referrable {
+  id:ulong(key, hash:"fnv1a_64");
+}
+
+/// an example documentation comment: "monster object"
+table Monster {
+  pos:Vec3 (id: 0);
+  hp:short = 100 (id: 2);
+  mana:short = 150 (id: 1);
+  name:string (id: 3, key);
+  color:Color = Blue (id: 6);
+  inventory:[ubyte] (id: 5);
+  friendly:bool = false (deprecated, priority: 1, id: 4);
+  /// an example documentation comment: this will end up in the generated code
+  /// multiline too
+  testarrayoftables:[Monster] (id: 11);
+  testarrayofstring:[string] (id: 10);
+  testarrayofstring2:[string] (id: 28);
+  testarrayofbools:[bool] (id: 24);
+  testarrayofsortedstruct:[Ability] (id: 29);
+  enemy:MyGame.Example.Monster (id:12);  // Test referring by full namespace.
+  test:Any (id: 8);
+  test4:[Test] (id: 9);
+  test5:[Test] (id: 31);
+  testnestedflatbuffer:[ubyte] (id:13, nested_flatbuffer: "Monster");
+  testempty:Stat (id:14);
+  testbool:bool (id:15);
+  testhashs32_fnv1:int (id:16, hash:"fnv1_32");
+  testhashu32_fnv1:uint (id:17, hash:"fnv1_32");
+  testhashs64_fnv1:long (id:18, hash:"fnv1_64");
+  testhashu64_fnv1:ulong (id:19, hash:"fnv1_64");
+  testhashs32_fnv1a:int (id:20, hash:"fnv1a_32");
+  testhashu32_fnv1a:uint (id:21, hash:"fnv1a_32", cpp_type:"Stat");
+  testhashs64_fnv1a:long (id:22, hash:"fnv1a_64");
+  testhashu64_fnv1a:ulong (id:23, hash:"fnv1a_64");
+  testf:float = 3.14159 (id:25);
+  testf2:float = 3 (id:26);
+  testf3:float (id:27);
+  flex:[ubyte] (id:30, flexbuffer);
+  vector_of_longs:[long] (id:32);
+  vector_of_doubles:[double] (id:33);
+  parent_namespace_test:InParentNamespace (id:34);
+  vector_of_referrables:[Referrable](id:35);
+  single_weak_reference:ulong(id:36, hash:"fnv1a_64", cpp_type:"ReferrableT");
+  vector_of_weak_references:[ulong](id:37, hash:"fnv1a_64", cpp_type:"ReferrableT");
+  vector_of_strong_referrables:[Referrable](id:38, cpp_ptr_type:"default_ptr_type");                 //was shared_ptr
+  co_owning_reference:ulong(id:39, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"naked");  //was shared_ptr as well
+  vector_of_co_owning_references:[ulong](id:40, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"default_ptr_type", cpp_ptr_type_get:".get()");  //was shared_ptr
+  non_owning_reference:ulong(id:41, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"naked", cpp_ptr_type_get:"");                              //was weak_ptr
+  vector_of_non_owning_references:[ulong](id:42, hash:"fnv1a_64", cpp_type:"ReferrableT", cpp_ptr_type:"naked", cpp_ptr_type_get:"");                 //was weak_ptr
+  any_unique:AnyUniqueAliases(id:44);
+  any_ambiguous:AnyAmbiguousAliases (id:46);
+  vector_of_enums:[Color] (id:47);
+  signed_enum:Race = None (id:48);
+  testrequirednestedflatbuffer:[ubyte] (id:49, nested_flatbuffer: "Monster");
+  scalar_key_sorted_tables:[Stat] (id: 50);
+}
+
+table TypeAliases {
+    i8:int8;
+    u8:uint8;
+    i16:int16;
+    u16:uint16;
+    i32:int32;
+    u32:uint32;
+    i64:int64;
+    u64:uint64;
+    f32:float32;
+    f64:float64;
+    v8:[int8];
+    vf64:[float64];
+}
+
+rpc_service MonsterStorage {
+  Store(Monster):Stat (streaming: "none");
+  Retrieve(Stat):Monster (streaming: "server", idempotent);
+  GetMaxHitPoint(Monster):Stat (streaming: "client");
+  GetMinMaxHitPoints(Monster):Stat (streaming: "bidi");
+}
+
+root_type Monster;
+
+file_identifier "MONS";
+file_extension "mon";