* Add variable for ruleguard config directory
* Add variable for ruleguard config directory
* Add variable for ruleguard config directory
* Add variable for ruleguard config directory
* Add unit tests
* Add unit tests for ruleguard
* Add unit tests for ruleguard
* Add unit tests for ruleguard
* Add unit tests for ruleguard, fix package name
Run all linters per package. It allows unloading package data when it's
processed. It dramatically reduces memory (and CPU because of GC) usage.
Relates: #337
Treat Go source files as plain text files by misspell: it allows detecting
issues in strings, variable names, etc. Also, it's the default mode of
a standalone misspell tool.
Also, implement richer and more stable auto-fix of misspell issues:
now it can fix multiple issues in one line.
Fix#324, relates #314
1. Update gocritic to the latest version
2. Use proper gocritic checkers repo, old repo was archived
3. Get enabled by default gocritic checks in sync with go-critic: don't
enable performance, experimental and opinionated checks by default
4. Support of `enabled-tags` options for gocritic
5. Enable almost all gocritic checks for the project
6. Make rich debugging for gocritic
7. Meticulously validate gocritic checks config
