Expanded support valid coordinate syntax, customizable regex strings

• Added support to find() and validate() for the following valid syntax:
  • Negative altitude
  • Decimals in nsposition and ewposition
• Moved regex builder into a separate file and organized based on coordinate part. Added customization options for whitespaces. This improves maintainability and will allow the library to handle more use cases in future methods. (url encoding?)

Version 0.2.0

• Added validate() method.

Version 0.1.0

• Initial release.
• Added find().