Anope 2.1.0

• Added nickserv:minpasslen for configuring the minimum password length
• Added support for access list entry descriptions.
• Added support for linking over a UNIX socket.
• Added support for server-initiated logins and logouts on UnrealIRCd
• Added support for server-initiated logouts on InspIRCd
• Added support for the ANONYMOUS SASL mechanism
• Allowed users to opt-out of being added to channel access lists
• Cleaned up the codebase to use Modern C++17
• Modernized the build system to use a modern version of CMake
• Removed nickserv:strictpasswords as it is obsolete now nickserv:minpasslen exists
• Removed support for using insecure encryption methods as the primary method
• Removed the Windows-only anopesmtp tool
• Removed the inspircd12 and inspircd20 modules (use inspircd instead)
• Removed the ns_getpass module (no supported encryption modules)
• Removed the os_oline module (no supported IRCds)
• Removed the two day X-line cap
• Removed the unreal module (use unrealircd instead)
• Renamed nickserv:passlen to nickserv:maxpasslen
• Renamed the charybdis module to solanum
• Renamed the inspircd3 module to inspircd
• Renamed the unreal4 module to unrealircd
• Replaced uplink:ipv6 with uplink:protocol
• Updated all references to IRCServices to refer to Anope instead