Looking at buying Spreadsheet but there are two features I really need

Are there any plans to add:

a) Merging cells (this is the one i really really need)
b) True header rows (like https://handsontable.com/examples has)?

I like your product better than the others I’ve been exploring, but those two features are essential for me.

Thank you for your request. It will be sent to the dev team and your suggestions will be added to the dhxSpreadsheet roadmap.
Unfortunately I cannot give you any terms for now.