Deleted the parsing code for the version of tha TAP.

Since a specified of a version is unnecessary
for the version lower than 12

It is due to add when supporting version 13.
Added for Changes.
Refactoring

Simplified about the code of a parsing subtests.
Fixed test pattern.

A subtest may also be outputted to the place of a plan being outputted to a the first, and the the last.
v0.0.5