Changes

Summary

1. Added the option to get and set a guilds system channel (#431) (commit: c53c4c7) (details)
2. Implemented default channel changes (#422) (commit: 9570e1c) (details)
3. Small javadoc fixes (commit: 691d173) (details)

Commit c53c4c7890034e4ce9e8793da65648044926d8a0 by business Added the option to get and set a guilds system channel (#431) (commit: c53c4c7)
	src/main/java/net/dv8tion/jda/core/entities/EntityBuilder.java (diff)
	src/main/java/net/dv8tion/jda/core/handle/GuildUpdateHandler.java (diff)
	src/main/java/net/dv8tion/jda/core/entities/impl/GuildImpl.java (diff)
	src/main/java/net/dv8tion/jda/core/audit/ActionType.java (diff)
	src/main/java/net/dv8tion/jda/core/events/guild/update/GuildUpdateSystemChannelEvent.java
	src/main/java/net/dv8tion/jda/core/managers/GuildManager.java (diff)
	src/main/java/net/dv8tion/jda/core/hooks/ListenerAdapter.java (diff)
	src/main/java/net/dv8tion/jda/core/audit/AuditLogKey.java (diff)
	src/main/java/net/dv8tion/jda/core/entities/Guild.java (diff)
	src/main/java/net/dv8tion/jda/core/managers/GuildManagerUpdatable.java (diff)
Commit 9570e1cbecb554b8f49ad18fd89fa336ce49b76b by business Implemented default channel changes (#422) (commit: 9570e1c)
	src/main/java/net/dv8tion/jda/core/entities/impl/MemberImpl.java (diff)
	src/main/java/net/dv8tion/jda/core/entities/Member.java (diff)
	src/main/java/net/dv8tion/jda/core/entities/impl/GuildImpl.java (diff)
	src/main/java/net/dv8tion/jda/core/entities/EntityBuilder.java (diff)
	src/main/java/net/dv8tion/jda/core/entities/Guild.java (diff)
Commit 691d1733f11a784375d2602ca81f9d495fcd9b0c by business Small javadoc fixes (commit: 691d173)
	src/main/java/net/dv8tion/jda/core/entities/Guild.java (diff)
	src/main/java/net/dv8tion/jda/core/events/guild/update/GuildUpdateSystemChannelEvent.java (diff)