Date values should be supported about sanddance

[RandomFractals]

Hi guys!

You might want to try my Data Preview vscode extension. It formats dates and numbers for the grid and charts display:

https://github.com/RandomFractals/vscode-data-preview

I just need to add the same for saving formatted dates.

Also, my extension supports a lot of different input data formats and export data options:

https://github.com/RandomFractals/vscode-data-preview#supported-json-config-binary--excel-data-file-formats

More info on that data tool for vscode devs is in this dev.to post:

https://dev.to/tarasnovak/vscode-data-preview-for-devs-around-the-39mn

It seems that it automatically convert string dates in standard format to Unix timestamp in milliseconds.
I can see that it parsed the strings 2018-12-18 13:35:51 and December 18, 2018, 01:35:51 PM to a numeric 1545136551000.
Surprisingly, it considered my string being GMT+1 and not GMT. GMT+1 is my local time so I assume that it defaulted to it because my strings didn't provide a TZ.

So it's helpful that it parses datetimes but it would be better if it show string datetimes in the interface and on the plots rather than the epochs.

[patriked]

If you insert some random char in the date time string (2019-09-29X00:56) for example, SandDance won't treat it as a datetime so you can hover on a data point and understand the value.