More tests
Fix confusing error message with -g and IPv6 addresses (fixes #58)
build all branches with travis-ci
Allow option '-f' also for non-root (since setuid privileges are dropped)
Add test for -f option
more tests
more tests
more tests
re-order options in usage information
re-order options in usage information
test fixes
test fixes
test fixes
more tests
more tests
more tests
more tests
more tests
more tests
test fix