Minor refactoring of Range and Thresholds support #119

Job	Run time
CI matrix / Assert PR branch is ahead	4s
Makefile / Assert PR branch is ahead	3s
Makefile / Build codebase using Makefile quick recipe	28s
Makefile / Lint codebase using Makefile	0s
Makefile / Build codebase using Makefile all recipe	0s
CI matrix / Evaluate loopvar scoping changes	21s
CI matrix / Lint codebase (go-ci-oldstable, false)	39s
CI matrix / Lint codebase (go-ci-stable, false)	41s
CI matrix / Lint codebase (go-ci-unstable, true)	34s
CI matrix / Run tests (go-ci-oldstable, false)	31s
CI matrix / Run tests (go-ci-stable, false)	29s
CI matrix / Build codebase (go-ci-oldstable, false)	18s
CI matrix / Run tests (go-ci-unstable, true)	33s
CI matrix / Build codebase (go-ci-stable, false)	24s
CI matrix / Build codebase (go-ci-unstable, true)	21s
CI matrix / Optional Linting / Assert PR branch is ahead	11s
CI matrix / Optional Linting / Lint codebase using optional linters (go-ci-oldstable, true)	32s
CI matrix / Optional Linting / Lint codebase using optional linters (go-ci-stable, true)	28s
CI matrix / Optional Linting / Lint codebase using optional linters (go-ci-unstable, true)	32s
	7m 9s

Provide feedback