Conda package recipes for Shumlib, Mule, and ANTS

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I recently needed to build Conda packages for Shumlib, Mule, and ANTS on the NIWA HPC, so I thought I'd share the recipes in case this is useful for the Momentum Partnership. There are currently two limitations:

• The Mule package does not currently build all possible sub-packages
• All three packages rely on source codes from MOSRS, so they require setting up Subversion URLs in the meta.yaml files before they can be built - this problem may be resolved by GitHub migration

It could also be considered to upload package builds to conda-forge, if the package developers are happy with making them publicly available, which would greatly simplify installation.

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That's a great idea, thanks, @ScottWales