 @name constrainRotation
 @methodOf Number#
 
+@type Number
 @returns This number constrained between -PI and PI.
-@type Number
 ###
 Number::constrainRotation = ->
   target = this

@name toColorPart
@methodOf Number#

@returns Hexidecimal representation of the number
@type String

<code><pre>
   255.toColorPart()

@name primeFactors
@methodOf Number#

@type Array
@returns An array containing the factorization of this number.

<code><pre>
   60.primeFactors()
