Added condensed version of KeyedList for legacy imports to legacy.py
Added condensed version of KeyedList for legacy imports to legacy.py

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