Fixing a problem with the testsuite. Introduce new tests.

* Testsuite looked in the output for test directives instead of source.
* Testcases for TapCreator and TapSimpleCreator.
Bugfix: Write TAP version if given explicitly in procedural API.
Release v1.0.4
Write procedural API output per default to stderr.
Bugfix: Fix number of testcase determination for (Simple)TapCreator.
Release v1.1.0