MAINT: Reduce size of wheels (>90% reduction on linux)

[rmcar17]

Old size for 3 linux wheels was 150MB, now 12.2MB for 3 wheels. Achieved by stripping the resulting extension module file.

[coveralls]

Pull Request Test Coverage Report for Build 15895590828

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
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• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.118%

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Totals
Change from base Build 15895523088:	0.0%
Covered Lines:	1461
Relevant Lines:	1474

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💛 - Coveralls