i/101: Editor config defined in the component should not be mutable

[oleq]

Suggested merge commit message (convention)

Fix: Editor config defined in the component should not be mutable. Closes #101.

[coveralls]

Pull Request Test Coverage Report for Build 96

• 3 of 3 (100.0%) changed or added relevant lines in 1 file 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 94:	0.0%
Covered Lines:	31
Relevant Lines:	31

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💛 - Coveralls

[pomek]

This PR is good. However, shouldn't we consider adding this feature to Editor class? The same problem can occur in other integrations.

[pomek]

☝️ Even if we add the fix in Editor class, the original issue will still stay because the problem occurs when a user creates the Vue component. Before the component calls Editor.create(), the config is being modified. Adding a fix to Editor.create() is a little too late and we will still need the fix here.