fix: move default export to the end

[johannwagner]

This moves the default export to the end of the export section. This avoids build errors with webpack. This resolves Default condition should be last one errors.

Other libraries also have similar issues, just copied the trick from over there: vuejs/vue-test-utils#2023

[coveralls]

Pull Request Test Coverage Report for Build 6519800939

• 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 100.0%

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Totals
Change from base Build 6000483639:	0.0%
Covered Lines:	155
Relevant Lines:	155

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💛 - Coveralls