Number Filters

• add - adds arg to the value.
• divisibleby - returns True if the value is divisible by n.
• filesizeformat - converts a value in bytes to a friendly file size format.
• floatformat - rounds a float to n decimal places.
• get_digit - returns the digit i characters from the right side of the value.
• length - returns the length of a value.
• wordcount - outputs the number of words in a value.