[] in open trigger stacking

[mmann1123]

I just noticed that passing a list to open triggers stacking even if it only has one element. Assuming this isn't intentional.

from geowombat.data import l8_224078_20200518

with gw.open(l8_224078_20200518) as src:
    print(src)

<xarray.DataArray (band: 3, y: 1860, x: 2041)> Size: 23MB

with gw.open([l8_224078_20200518]) as src:
    print(src)

<xarray.DataArray (time: 1, band: 3, y: 1860, x: 2041)> Size: 23MB