Tidy up spreadsheet insert
Would be good to be able to determine the 'rectangle' that needs to be inserted into the iMindmap.
Currently there is a large spreadsheet inserted even if say only 4x4 table used (see attachment).
And also spreadsheets editing feature should be able to design more format funcionalities, like collapse cells, wrap text, different cells sizes, etc.
I think the best way to do it should be enable imindmap to import excel files (as it appeas in excel).