------------------
- Renamed TypeError to VisaTypeError.
- Added InvalidBinaryFormat. Renamed TypeError to VisaTypeError.
- Added a lot of docstrings. Fixed bug with ValueError exception raising.
- Eliminated string exceptions. A little bit of code clean-up.
- Added old distutils inclusion for RPM that cause trouble with my setuptools
installation.
- Set default for term_chars to None and implemented it in write() method.
- Described new default for term_chars.
- Added instrument(). Fixed bugs in __repr()__.
- Improved documentation.
- Switched from distutils to setuptools.