Merge branch 'vue2-compat' into feature/new-theme #855

Job	Run time
build	3m 0s
Julia 1.6 - ubuntu-latest - x64	3m 10s
Julia 1.6 - macOS-latest - x64	3m 59s
Julia 1.6 - windows-latest - x64	12m 48s
Julia 1 - ubuntu-latest - x64	4m 58s
Julia 1 - macOS-latest - x64	6m 9s
Julia 1 - windows-latest - x64	5m 51s
Julia nightly - ubuntu-latest - x64	5m 14s
Julia nightly - macOS-latest - x64	7m 10s
Julia nightly - windows-latest - x64	6m 4s
	58m 23s

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