Updated to meet some of CL3

- added number2Roman
- added roman2Number
- added formatWord
- added --format-word option
- edit format
Updated to meet more of CL3

- created formatWords
- fixed number2Roman
- added srange
Updated code format of sequ.py
Implemented roman numbers as a class.
Added input error checking for roman.py
Updated sequ formatting types
updated sequ.py

- minor fixes
- sequRange
- frange
documentation and organization
Documentation and minor fix