Reads configuration directly from a datapackage

[willu47]

Addresses #104 and begins to address #56

• adds a utility function to read a user config directly from a data package
• integrates this into the otoole.ReadDatapackage class
• adds a test (currently failing on default values)

[HauHe]

Just for better understanding, will this allow to have parameter in the datapackage that are not in the standard OSeMOSYS code?

[willu47]

Hi @HauHe - I think so... It requires a bit more testing to ensure, but the idea is that if you read in a model from a datapackage, you won't need any extra config files. otoole will use the information in the datapackage to perform conversions from the datapackage to other formats. Ideally, it would then also generate the config file (e.g. a config.yaml) which you could pass in if converting from another format. - not yet implemented

[HauHe]

Hi @willu47, that would be great! Would come really handy when working/testing with modified versions of OSeMOSYS. Thanks a lot for pursuing this!

[willu47]

Superceded by #110