Update a local neuronlist with new CATMAID data

Use to update a large neuronlist quickly by pulling just certain neurons from CATMAID

update_neurons(someneuronlist, skids, ...)

update_names(someneuronlist, skids = names(someneuronlist), ...)

Arguments

someneuronlist	a neuronlist object
skids	skeleton IDs
...	additional arguments passed to read.neurons.catmaid