Added an optional force option to writeObject.

With this patch you can force writeObject to disregard caching and always write
the given object.

    f:writeObject(sample, true)

If only there were javadoc style comments, I would add to the comment string as
well...
Allow for equal bounds in range
make areTablesEqual local.
Merge pull request #94 from rosejn/force_write

Added an optional force option to writeObject.
Merge pull request #97 from jucor/RangeEqualBounds

Allow for equal bounds in range