Add compat bounds for extras #30

Job	Run time
Julia nightly - ubuntu-latest - x64 - push	2m 14s
Julia nightly - ubuntu-latest - x86 - push	3m 27s
Julia nightly - macOS-latest - x64 - push	3m 14s
Julia nightly - windows-latest - x64 - push	3m 4s
Julia nightly - windows-latest - x86 - push	4m 46s
Julia 1.6 - ubuntu-latest - x64 - push	44s
Julia 1.6 - ubuntu-latest - x86 - push	48s
Julia 1.6 - macOS-latest - x64 - push	1m 19s
Julia 1.6 - windows-latest - x64 - push	10m 24s
Julia 1.6 - windows-latest - x86 - push	10m 24s
Julia 1.0 - ubuntu-latest - x64 - push	56s
Julia 1.0 - ubuntu-latest - x86 - push	1m 6s
Julia 1.0 - macOS-latest - x64 - push	1m 44s
Julia 1.0 - windows-latest - x64 - push	8m 7s
Julia 1.0 - windows-latest - x86 - push	4m 37s
	56m 54s

Provide feedback