Added tests for 64-bit precision
Fixed bug in parsing unicode strings

* Added tests
concise outputs for python setup.py nosetests.
Overflow of month, hour, etc. raises ValueError
always raise ParseException. clears out the crud inside test_samples.py,
at the cost of emitting error messages whose vagueness approaches that
of $(CXX).
Merge pull request #10 from davidfischer/test-unicode

Fixed bug in parsing unicode strings
Test for strings with invalid escape sequences

There are two bugs here:
* \U makes Python think this is a Unicode code point
* Other escape sequences like \p should raise
detect and raise on unreserved escapes.
update conformity.
Merge pull request #8 from davidfischer/large-numbers

Added tests for 64-bit precision
check syntax before evaluating.
L is deprecated in python 3.
fancy output.