Moved all source code to ./src/

  This is coupled with a new Makefile which will build both versions
 of the project at the same time.
  Moved all files to ./src/

  This closes #84.
  Update the changelog for the impending release.
  Updated the rules for building a Debian package.

  Now we compile lumail + lumail-debug in one step we don't need
 to jump through hoops.
  Added include path for ncursesw.
  Version number needs to be updated in src/version.h
 Not just ./version.h

  This means 0.16 will show as unreleased.  Sigh.