Making inspect_apsimx more robust

[femiguez]

Things to do:

• test it with all examples
• add better messages when inspection fails

[femiguez]

I developed the option 'Other' substantially. Need to add functionality to supplying the parameter as a vector of length > 1 or a list.

[femiguez]

If supplying parm as a list and there are multiple simulations need to provide that. If supplying an incorrect character string, error needs to be more friendly

[femiguez]

Add the possibility of supplying a vector when node = "Other" and parm is a list. For example, list(1, 1:3). Add the possibility of changing the return object from 'inspect_apsimx' such as 'path', 'data.frame' or 'list'

[femiguez]

Lots of progress on this but not done yet

[femiguez]

Last improvement was related to improving the ability to create a parameter path when node = "Other" and parm is a list with integers such as 'parm = list(1, 2, 3)'

[femiguez]

Closed for now. I'll open something new if there are problems