Update PPA to get a working libgeos-dev
Merge pull request #634 from rhattersley/fix-ppa

Update PPA to get a working libgeos-dev
TestPPSave for 32-bit arch
PEP 8 iris.pandas
PEP 8 iris.palette
Convert iris.analysis.SUM to a weighted aggregator. Closes #595.
Merge pull request #627 from rhattersley/pep8-palette-and-pandas

PEP 8 iris.palette and iris.pandas
PEP 8 iris.exceptions
test_ff for 32 -bit arch
Merge pull request #628 from rhattersley/pep8-iris.exceptions

PEP 8 iris.exceptions
lambert grib
grib hind doc
NF - add 1D scatter plot functions.
Merge pull request #617 from ajdawson/scatter-1d

NF - add 1D scatter plot functions.
PEP 8 iris.quickplot
Merge pull request #547 from bblay/hinddoc

Improve documentation of GRIB hindcast workaround flag.
Merge pull request #626 from ajdawson/weighted-sum

Convert iris.analysis.SUM to a weighted aggregator.
Switch to using DimCoord.from_regular
Merge pull request #629 from rhattersley/pep8-iris.quickplot

PEP 8 iris.quickplot
Remove workaround from filtering example