Using intl to format numbers produced by Number::toReadableSize()
Starting to use NumberFormatter in the Number lib
Improving and optimizing code for Number::precision()
Removing dead code
Making Number::format() locale aware
Fixing Number::formatDelta()
Some work towards getting Number::currency fixed
Removed the wholeSymbole and wholePosition options in favor of using custom patterns
More improvents to Number::currency()

Removed the feature to auto format negative numbers into parenthesis
Removed the ability to set a custom currency symbol as it can be done with pattern
Fixing and adding tests for setting places and precision in Number::currency()
Improving docblock for Number::currency()
Improving Number::defaultCurrency() and fixing issue with showing negative cents
Fixed Number::defaultCurrency()
Removing Number::addFormat(), given that intl has all formats it was not needed
Removed the escaping option from Number methods, they belonto into a helper
Added the escape option to methods in NumberHelper
Added NumberHelper::formatDelta