v2.0.1

UKCarbonIntensityData v2.0.1

Merged pull requests:

• add docs, plots, general improve (#8) (@Ianlmgoddard)
• ignore files (#9) (@Ianlmgoddard)
• remove Julia 1.0, fix docs (#12) (@Ianlmgoddard)
• test doc deploy (#13) (@Ianlmgoddard)
• add some tests (#14) (@Ianlmgoddard)
• add fetch for generation mix and refactor (#15) (@Ianlmgoddard)
• compat several packages. (#17) (@Ianlmgoddard)