detect multiple versions of nject and fail

detect multiple versions of nject and fail

DetailedError will not panic on nil error

properly release v2

ConsumptionOptional now takes a type param

review feedback

build(deps): bump github.com/stretchr/testify from 1.8.2 to 1.9.0

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.8.2 to 1.9.0.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](stretchr/testify@v1.8.2...v1.9.0)

---
updated-dependencies:
- dependency-name: github.com/stretchr/testify
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

doc: references to ntest (#68)

fix: Cluster() did not work as documented (#67)

feat: Add ReplaceNamed(), InsertBeforeNamed(), and InsertAfterNamed() (…

…#63)

* Add ReplaceNamed(), InsertBeforeNamed(), and InsertAfterNamed()

* coverage identified some lines that were not needed

* clarify comment

* add failure tests

* review feedback