Fixed imports in options so that Store may be imported into dimension.py
Fixed imports in options so that Store may be imported into dimension.py

basnijholt/holoviews,basnijholt/holoviews,mjabri/holoviews,vascotenner/holoviews,vascotenner/holoviews,mjabri/holoviews,ioam/holoviews,ioam/holoviews,ioam/holoviews,mjabri/holoviews,basnijholt/holoviews,vascotenner/holoviews