Possible Common error - request for better error message

[odunbar]

Issue

In the following we draw in an Abstract matrix for g

EnsembleKalmanProcesses.jl/src/EnsembleKalmanProcess.jl

Line 847 in f869831

g::AbstractMatrix{FT};

It is posisble that users construct observations for g (as they have done for the observation) to pass in

Possible solution

We should catch this error - or at least write a better error message for this and add it to our list on the documentation