release v1.1.0

Notable changes:

- Remove reference to "creative commons" license for docs
- Remove gotest.tools dependency
- Test against go1.19
- Drop support for go1.16 and older

Dependencies updates:

- Update github.com/sirupsen/logrus to v1.9.0
- Update github.com/vishvananda/netlink to v1.1.0
- Update github.com/vishvananda/netns to v0.0.2
- Update golang.org/x/sys to v0.2.0

Merge pull request #24 from ns-jtenberge/patch-1

Correct data types for connection counts

1.0.0 release