Add methods to apply functions to Rcompadre class objects

[jonesor]

Add methods to apply functions to Rcompadre class objects.
i.e. rather than accepting single matrices, accept sets of matrices.

[jonesor]

@iainmstott - is this simply a case of adding an if statement saying, "if this is a compadreDB object, use lapply or mapply to apply the function"?

I'm just wondering whether this is something that can be achieved before the end of the month in time for our planned submission date.

[iainmstott]

Something like that. More like if matrix-class do X, if compadre matrix do Y, if compadreDB do Z
Tentatively I would say it could be done by the end of the month? It won't be as simple as just changing the behaviour, as the methods are used so much throughout the package, those instances should probably be checked and edited where necessary. Some edits could be necessary if it breaks the code, some could be more "cosmetic" in passing compadre objects to functions rather than extracting matrices and doing it the "long" way