v1.11.2

This version is a rollback of the previous one with few new changes and options after some concerns about the worker being destroying when the component is hidden with v-if (see #156 and #151)

• Destroying the component's worker will be optional
  • auto-destroy prop was added to allow keeping the previous behaviour.
  • By default the worker will keep active even if the component is not used anymore.
  • destroy() method was added to destroy the worker manually.