Feature request - add combination of units

[secretyouth]

Hi,

Thanks for an awesome package. It's able to solve my immediate needs for my application.

I am after a combination of units which would be very helpful for some recipes I am using:

e.g. 1 tbsp+ 1 tsp olive oil

[undermark5]

Hey, not sure how active this repo is anymore, and I'm also not a maintainer, just saw this issue and thought I had some insights to share. I believe supporting something like this would be very difficult without requiring some sort of tagging functionality (ala Cooklang). As matter of fact, the paid service Zestful is incapible of handling this scenario.

That being said. There are 3 tsp in 1 tbsp, so you can manually convert this to 1 1/3 tbsp. Not ideal when cooking as there isn't a 1/3 tbsp measuring spoon (well it is the tsp, but it isn't labeled as 1/3 tbsp) so you have to remember the conversion of 1 tbsp -> 3 tsp.