* CI/build: Update Go version, linters and fix minor issues
* linters: Add intrange, copyloopvar, additional go vet linters to match gopls and fix issues
* Bump CI versions
* Specifically set go version as 1.17.x bumps it to 1.18
* Another
* Adjust AppVeyor
* Part 1 of linter issues
* Part 2
* Fix various linters and improvements
* Part 3
* Finishing touches
* Tests and EqualFold
* Fix nitterinos plus bonus requester jobs bump for exchanges with large number of tests
* Fix nitterinos and bump golangci-lint timeout for AppVeyor
* Address nits, ensure all books are returned on err due to syncer regression
* Fix the wiggins
* Fix duplication
* Fix nitterinos
* golangci-lint/CI: Bump versions
Fix remaining linter issues
* Specifically set AppVeyor version
* Fix the infamous typos 👀
* Add go env cmd to AppVeyor
* Add go version cmd to AppVeyor
* Specify AppVeyor image, adjust linters
* Update go get to go install due to deprecation
* Bump golangci-lint timeout time for AppVeyor
* Change NW contract to NQ
* Address nitters
* GetRandomPair -> Pair{}
* Address nits
* Address time nitterinos plus additional tweaks
* More time inception upgrades!
* Bending time and space
* started adding basic lru cache system
* Added basic LRU cache including Add Get Remove Contains ContainsOrAdd Clear
* wording changes on comments
* removed exported var's in strut as they are not required
* Added README
* README updates
* rm line :D
* swapped to mutex over rwmutex updated comments
* unexported getNewest & getOldest
* unexported getNewest & getOldest
* Updated comments and cited references in source
* updated comments
