[BUG] v0.10.1 import fails in Google Collab notebooks

[willemarcel]

Context

When I install lonboard 0.10.1 in a Google Collab, the import fails.

Resulting behaviour, error message or logs

Describe what happened:

TypeError                                 Traceback (most recent call last)

[<ipython-input-2-898f83bc3a04>](https://localhost:8080/#) in <cell line: 1>()
----> 1 from lonboard import Map

4 frames

[/usr/local/lib/python3.10/dist-packages/lonboard/traits.py](https://localhost:8080/#) in <module>
   1076 
   1077 
-> 1078 class VariableLengthTuple(traitlets.Container[Tuple[T, ...]]):
   1079     """
   1080     An instance of a Python tuple with variable numbers of elements of the same type.

TypeError: 'type' object is not subscriptable

Environment

• Lonboard Version: 0.10.1
• Runtime: CPU

Steps to reproduce the bug

Describe the actions that led you to encounter the bug. Example:

1. imported lonboard into a new notebook
2. add a new code line with from lonboard import Map

[kylebarron]

What version of traitlets is installed?

[willemarcel]

What version of traitlets is installed?

traitlets is 5.14.3

[kylebarron]

Aha, no it's not!

This is annoying but apparently it's not possible to update the traitlets version on Colab

[spatialthoughts]

I am also running into this in Colab. Switching to the old version makes it work for now. !pip install lonboard==0.9.3 but would be good to make the newer versions work in Colab.