fix: do not depend on Vue

[fdlk]

It is a dev dependency

Checklist

• [x] Functionality works & meets specifications
• [x] Code reviewed
• [x] Code unit/integration/system tested
• User documentation updated
• [x] Clean commits
• No warnings during install
• Added Feature/Fix to release notes

[fdlk]

I'm not clear on why we want to call Vue.extend. I do know why we don't want to do it, because it means the library depends on Vue. So unless there's a clear need, I'd like to try doing without.

[codecov[bot]]

Codecov Report

Merging #66 into master will decrease coverage by 0.3%. The diff coverage is n/a.

@@           Coverage Diff            @@
##           master     #66     +/-   ##
========================================
- Coverage    89.4%   89.1%   -0.4%     
========================================
  Files          13      12      -1     
  Lines         104     101      -3     
  Branches       13      13             
========================================
- Hits           93      90      -3     
  Misses         11      11

Flag	Coverage Δ
#unit	89.1% <ø> (-0.4%)	:arrow_down:

Impacted Files	Coverage Δ
src/components/DropDownItems.vue	100% <ø> (ø)	:arrow_up:
src/components/CookieWall.vue	90% <ø> (-1%)	:arrow_down:
src/components/NavBar.vue	82.5% <ø> (ø)	:arrow_up:

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[molgenis-jenkins]

:tada: This PR is included in version 1.3.1 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket:

[connoratrug]

Please describe the issue that is being 'fixed' here ( and link it), what is expected and the observed behaviour.

Vue.extend adds typing support for typescript and IDE, see view doc on using extend and connection with typescript support.