one more fix
fix #119
Don't "return 0" in a void function

This was causing my compile to fail, so I just blew away the return
value.  Hopefully that's a sane thing to do...
merge
change name back to Tester
change Tester21 MapTester
update docs to 2.2.0
new for 2.2.0
Merge pull request #141 from palmer-dabbelt/void_return

Don't "return 0" in a void function
tweaks to doc html
all tests pass: does not name the named node in Vec