Getting rid of event system in favour of something simpler

[brawaru]

Is your request related to a problem? Please describe.
A big chunk of VIntl's code is its event system. While it's nice to have so much insight into VIntl's operation, it can be implemented into a much simpler way — using regular parameters upon controller configuration and Vue watchers.

Describe the solution you'd like
Getting rid of event system completely, and replacing it with a simpler configuration upon creating the controller and Vue reactivity system.

Describe alternatives you've considered
N/D

Additional context
N/A