Create a bullet list in the table destroys it and adding a new bullet point doesn't work

[robertSt7]

First thanks for the great plugin.

I am facing the following problem:
When creating a bullet list in a cell and then try to import the data after exporting, a TypeError occurs:
Uncaught TypeError: Cannot convert undefined or null to object

Also adding a new bullet point doesn't work.

[attoae]

Refer to #12.
setContents causes the table to not display properly, replace with updateContents.
The Pull request needs to be merged to resolve the setContents issue.

[robertSt7]

@attoae I am using updateContents and the table is displayed after re-importing, but with smaller row size or some cells are deleted.
There are also some problems during editing like:
When adding some points and then delete one with backspace a new cell will be added

[attoae]

Okay, I will handle this issue.