No auto update spacing after gsheet sync
### Feature request / enhancement
I've start using paddy with gsheet sync plug-in. When i hit "ctrl+i" the content is updating but it does not auto update the spacing is the height of the text block if it's shorter. I should move text blocks again then it auto update or when i just duplicate it with holding alt it also auto update. 




---

### Bug report
#### Expected behavior:
When i hit "ctrl+i", if there is less content and the text block is shorter it should auto update spacing. 


#### Actual behavior:
<img width="553" alt="capture d ecran 2018-10-07 a 14 58 00" src="https://user-images.githubusercontent.com/12382753/46582029-72a68200-ca41-11e8-8c84-3d8630df3c40.png">
When i hit "ctrl+i", if there is less content and the text block is shorter it just reduce the text block size without updating spacing. 



#### Steps to reproduce:
(Please attach a Sketch file if possible)
[gsheet_paddy_spacing_issue.zip](https://github.com/DWilliames/paddy-sketch-plugin/files/2453918/gsheet_paddy_spacing_issue.zip)
( hit ctrl + i ) 
you need to have paddy + gsheet sync plug-in installed

