net-im/oysttyer: 2.6.1 -> 2.6.3

• Correct year on startup screen
• Adds very rudimentary CI syntax checks
• Expand long DMs suring start-up
• Nicely truncate long DMs when using /dump
• Revert shebang to original
• Fix a bug where whoami comparison was not lowercased for sent dms
• Update userstream endpoint