Fixed bug detecting a value that is different from the default (when value or default is a numpy array).
Fixed bug detecting a value that is different from the default (when value or default is a numpy array).

mjabri/topographica,mjabri/topographica,Tasignotas/topographica_mirror,ioam/topographica,Tasignotas/topographica_mirror,ioam/topographica,Tasignotas/topographica_mirror,ioam/topographica,mjabri/topographica,Tasignotas/topographica_mirror,Tasignotas/topographica_mirror,ioam/topographica,ioam/topographica,mjabri/topographica,mjabri/topographica