Fix reshape on scalars/empty arrays (#158)
* test reshape corner cases * pt.reshape: codegen handle reshapes on scalars and empty reshapes Co-authored-by: Alex Fikl <alexfikl@gmail.com> * Wrong argument count to reshape is a TypeError * Missing article in error message Co-authored-by: Alex Fikl <alexfikl@gmail.com> Co-authored-by: Andreas Klöckner <inform@tiker.net>