v0.2.8

ClimateModels v0.2.8

Diff since v0.2.7

Merged pull requests:

• V0p2p8a (#73) (@gaelforget)
• V0p2p8b (#74) (@gaelforget)
• bring IPCC example up to date (#75) (@gaelforget)
• GeoMakie.jl tests (#76) (@gaelforget)
• better handling of dependencies in example (#77) (@gaelforget)