Add zinc.cpp implementation per inline rules
Fix header guard for Zbutton.h
Mark Zbutton::update as virtual.
Mark Zwindow::update as virtual.
New makefile.
Remove binary from repo.
Remove trailing whitespace.
Merge branch 'master' into merge-attempt

Conflicts:
	test
Merge pull request #1 from nilium/upstream

Upstream
Thanks for cleaning up the code.