ALL software version info (bokeh, python, notebook, OS, browser, any other relevant packages)

python: 3.7.7
bokeh: 2.2.1
jupyter_core: 4.5.0
jupyter_client: 5.3.3
Chrome 85
macOS Catalina 10.15.7

Description of expected behavior and the observed behavior

In CSS, identifiers cannot start with a digit, two hyphens, or a hyphen followed by a digit (see [reference](https://www.

Currently a user can run a notebook as a "batch job" by implicitly creating a one node "transient" pipeline. (Although "transient" is technically incorrect, I am using the term to highlight the fact that the generated pipeline is hidden from the user in the Elyra UI and can only be seen (and re-used) in the Kubeflows Pipelines UI.)

![image](https://user-images.githubusercontent.com/13068832/935

Getting an error when trying to run IPyPlot with images in numpy.ndarray format with float data type.

KeyError                                  Traceback (most recent call last)
~\Anaconda3\envs\py36tf2gpu\lib\site-packages\PIL\Image.py in fromarray(obj, mode)
   2644             typekey = (1, 1) + shape[2:], arr["typestr"]
-> 2645             mode, rawmode = _fromarray_typemap[typekey]