ServerSystem v4.0.0 - Kotlin migration

[Test-Account666]

• Migrated all Java code to Kotlin
• Fixed tons of bugs
• Cleaned up some messy code (e.g. /home and /adminhome)

Somewhat detailed list of bug fixes:

Bug Fixes

• /unban throwing errors with invalid targets
• /ignore not ignoring players in chat
• /offlineinvsee not showing/saving off-hand and armor properly
• Kits not applying offhand/armor properly
• ClickableSigns "Paid" message not parsed correctly
• Several commands using incorrect permission/message paths (e.g. /ban, /unban and /ping)
• /rename causing NameTags to be quite useless
• /speed accepting illegal arguments and just silently normalizing them
• /pay allow illegal arguments (e.g. /pay -100)
• OperatorLevel spoof throwing errors in newer Minecraft versions
• Missing messages (e.g. "Migrator not found" or "Invalid Name" for warps)

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This discussion was created from the release ServerSystem v4.0.0 - Kotlin migration.