* first round cleanup based on go-critic
* more issues resolved for ifelsechain and unlambda checks
* updated from master and gocritic found a new ifElseChain issue
* disable appendAssign. i reports false positives
* re-enabled go-critic appendAssign and disabled lint check at code line level
* fixed go-critic lint error
* fixed // nolint add gocritic specifically
* HTTPRanger
* Migrate eestream library to use ReadCloser instead of Reader
* Use MultiReadCloser instead of MultiReader
* Adapt example cli cmds to latest serverbox changes
* Close LazyReadCloser only if only generated
* Close ReadClosers sequentially
* Close response body on unexpected status code
* Avoid double close of the pipe reader
* Better formatting for imports
* Exit instead of panicking
