Is your feature request related to a problem? Please describe.
The diagram generated automatically, but it is generated Horizontally whereas most users wish to have their charts generated vertically, also they wish to changes the position of nodes so that they could be easy for understanding. Also, the availability to create transitions by drag gives easy way and more comfortable way to create the connection.

Describe the solution you'd like
I like to see, ability to

1. Make connections or transitions by drag it from one node to another node and also a way to add custom looking transition lines and arrows.
2. Move the nodes inside the drawing plane and accordingly change the position of the transitions corresponding to it.
3. Add the custom-designed node diagrams to the chart.

Describe alternatives you've considered
I have tried many paid and open-source lib but very few are compatible with Vue.js and further very few have such flexibility to change component looks by CSS or SCSS very easily.
I have tried https://github.com/joyceworks/flowchart-vue but it is SVG, providing no flexibility to change the look and feel of Nodes.