Merge branch 'devel' to put sphinx documentation on the main branch.
Make sphinx theme selection error tollerant
Merge branch 'jascis-20' into devel
Merge branch 'devel'
adding apidocs to repo for compatibility with ReadTheDocs
Merge branch 'devel'
Fix to bug causing output file to be overwritten introduced in 69e84033c0...
Updates to aggregation to get aggregation grid correct for time, and to subset the data before aggregating with Iris so that extra that is outside the grid is not included.
Set missing value for Aeronet product (to -999) - Trac #444
Documentation updates, mostly related to aggregation.
Merge branch 'devel' of proj.badc.rl.ac.uk:jasmin_cis into devel