Use hyphens to give command results clear headings
Fix setmy func spelling error, add coverage test
Replace team highlight names with display names

It seems clearer to use the display names with coloured prefixes,
than to have all the team names coloured blue.
0.1.12
Tidy match start and stop messages
Make option defaults more suited to short games
Show spectator count in chan lobby
Like channels by member count
Handle negative page numbers
Check given option value against current value

Rather than checking against the current user_val, as internal_val has
already converted from the user-facing value to the internal value.
Add support for command blocks and console sender

All commands support a command block or console sender. Works the same
as the player commands, except the channel name has to be given as the
first argument, regardless of whether the command internally accesses a
channel or not. A number of peripheral changes:

- Channel admin permission is tested using `chan.is_admin(player)`
  instead of `player in chan.admins`, to allow for giving admin status
  to non-players (ie the console sender).

- All plugin permissions default to `op`, instead of false, so that
  console commands work without having to assign extra permission.

- Adds warning to use_main option that it will delete current
  objectives, as any op can now use the command out of the box.

- 'Editscore' command no longer detects the player channel
  automatically.

- Adds header to channel admin list.

- Fixes default channel set args not displaying the correct error
  message when len(args) > 1.
Plug ability to start game with no players

You can still remove players during countdown, but the game will be
cancelled if it all players have left by the time match_start() runs.
Remove redundant 'ready' msg when added to game
Fix setscoreboard validating for wrong settings
Stop showing redundant `/ro op add` usage message
Don't display help list in reversed order

This was previously useful, as the user would see the bottom row first,
and the list might go up off the screen, but now it gets cut into pages
it's easier to read top to bottom.
Consoles can use 'help' cmd without channel prefix
More information in editscore success message
Add player count to player command heading
Add header to help lists