expanded exception tests

	modified:   t/errors.t
inline t/inc/basic.zpl

	modified:   t/basic.t
	deleted:    t/inc/basic.zpl
expanded exception tests

	modified:   t/errors.t
error test for another missing-parent situation

	modified:   t/errors.t
cleanups

	modified:   lib/Text/ZPL.pm
POD

	modified:   lib/Text/ZPL.pm
v0.001001

   - Initial release