Piano construído.
Slots keyReleaseEvent e keyPressEvent implementados. Threads tornam-se
desnecessários.
Pequena mudança no prefixo das imagens.
Include desnecessário.
Unnecessary.
Merge branch 'master' of https://github.com/suehtamacv/that-piano-program

Conflicts:
	that-piano-program.pro.user
Major Change
Major Change
Merge branch 'master' into hugo

Conflicts:
	main.cpp
	that-piano-program.pro.user
	widget.cpp
	widget.h