PRT data type issue

[ofgulban]

Submitted by Judith:

Since I am working on a script for a customer, I tested your prt implementation and it works well – thanks for that!
There is one minor thing that I noticed:
The timings are imported as float arrays, this will result in problems when saving and re-importing any changed PRTs in BV.
Therefore, I would suggest to use int arrays.

[ofgulban]

Thanks @ju-ec , this issue is addressed now.