Fixing assign function
New script for Atlatnis NEUS skill assessment
Updating Skill_assess w correlations and heat map

- import new .csv files
- calculate correlation (Pearson, Spearman, Kendall)
- plot as heat map (ggplot - same as scenario plotting)
Create Heat-maps & other changes

Created code for heat-maps & initial Taylor diagrams
Skill assessment scripts

Added own script for skill assessment
Added targetDiagram script (unmodified) pilfered from solaR package