Release/v2.3.4

[zoul0813]

• Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  Releases v2.3.4 - updates in CHANGELOG

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

It should be backwards compatible with v.2.3.3

[coveralls]

Coverage remained the same at 89.979% when pulling e093fba on zoul0813:release/v2.3.4 into c03f85b on vue-generators:master.

[coveralls]

Coverage remained the same at 89.979% when pulling e093fba on zoul0813:release/v2.3.4 into c03f85b on vue-generators:master.

[coveralls]

Coverage remained the same at 89.979% when pulling e093fba on zoul0813:release/v2.3.4 into c03f85b on vue-generators:master.