new file:   project-euler/README
	deleted:    project-euler/lib.ss
	modified:   project-euler/problem-001.scm
	modified:   project-euler/problem-002.scm
	modified:   project-euler/problem-003.scm
	modified:   project-euler/problem-005.scm
	modified:   project-euler/problem-006.scm
	modified:   project-euler/problem-016.scm
	modified:   project-euler/problem-020.scm