Counter Discord Bot

1. No user may count twice in a row.
2. You may not use bots or scripts.
3. All counts must be incremental. (1, 2, 3, 4…)

/channels create - Create a new counting channel.
/channels add - Use an existing counting channel.

/count - View the current count of a channel.
/math - Calculate a math expression.

/config math - Allow/disallow math in a counting channel
/config talking - Allow/disallow talking in a counting channel
/config reactions - Enable/disable reactions in a counting channel.
/config fail-role - Configure a role to give when an user fails a count.

/config duplicate-message - Change the message sent when a user counts twice in a row.
/config wrong-message - Change the message to send when a user sends the wrong count.
/config fail-message - Whether a message should be sent when a user fails to count or not.

  * log(base=10, val) -- Logarithm with optional 'base' as first argument.
                         If not provided, 'base' defaults to '10'.
                         Example: `log(100) + log(e(), 100)`

  * e()  -- Euler's number (2.718281828459045)
  * pi() -- π (3.141592653589793)

  * int(val)
  * ceil(val)
  * floor(val)
  * round(modulus=1, val) -- Round with optional 'modulus' as first argument.
                             Example: `round(1.23456) == 1  &&  round(0.001, 1.23456) == 1.235`

  * abs(val)
  * sign(val)

  * min(val, ...) -- Example: `min(1, -2, 3, -4) == -4`
  * max(val, ...) -- Example: `max(1, -2, 3, -4) == 3`

  * sin(radians)    * asin(val)
  * cos(radians)    * acos(val)
  * tan(radians)    * atan(val)
  * sinh(val)       * asinh(val)
  * cosh(val)       * acosh(val)
  * tanh(val)       * atanh(val)```