Add a test for issue #2 of sharplispers/parse-number

The problem is:
CL-USER> (parse-number:parse-number "2.56 ")
=> 2.056

Note that there is a trailing space in the string.

Signed-off-by: Utz-Uwe Haus <lisp@uuhaus.de>
Fix parse-integer-and-places to correctly handle whitespace at end

cl:parse-integer reads over trailing whitespace, confusing the logic of
parse-integers, where the number of characters read is used to compute
the denominator of the fractional part.

Fixes sharplispers/parse-number#2

Signed-off-by: Utz-Uwe Haus <lisp@uuhaus.de>