#53 Missing headers in tarball

[Arnel A. Borja]

These 3 files are not added to the tarball:
src/gwaei/include/gwaei/flashcardwindow-callbacks.h
src/gwaei/include/gwaei/flashcardwindow.h
src/gwaei/include/gwaei/flashcardwindow-private.h

Included a patch to add them to noinst_HEADERS of the Makefile.am in folder src/gwaei/include/gwaei

[Arnel A. Borja]

Git patch to add missing headers

[Zachary Dovel]

Thank you.