Work Around For 256 Character Return Limit on RTD Functions

[Alexander Rickman]

Hi all, 

I rely heavily on the on the functionality and flexibility of the `ExcelRtdServer` class in my project, but I have noticed that the private `Topic.FixValue` function (see image below) truncates anything over 256 characters. 

In a previous thread (256 char limit on RTD), Govert mentions that one could use the `ExceObserver`/`Observable` wrapper to overcome the character limitation, but this would be a major redesign for me that I would really like to avoid. 

Does this limitation still apply to Excel 2016 and up? Is there any way that the truncating code in `Topic.FixValue` can be deprecated? If not, is there any other suggested workaround for this? 

Best, 

Alexander