v1.6.0

What's Changed

• Update Commands tests to the new TestCase structure by @adrianocastro189 in #106
• Convert MemoryString to a library class by @adrianocastro189 in #107
• Add the AbstractMemory class by @adrianocastro189 in #108
• Add the AchievementMemory class by @adrianocastro189 in #109
• Listen to ACHIEVEMENT_EARNED to trigger an AchievementMemory by @adrianocastro189 in #110
• Update README.md by @adrianocastro189 in #111
• Release - v1.6.0 by @adrianocastro189 in #105

Full Changelog: 1.5.0...1.6.0