Version 0.6.0

• optimal_interpolation_full that returns analysis variance
• Point-to-point variant of nearest neighbour and simple gradient downscaling
• allow_extrapolation option in OI functions
• local_distribution_correction method
• doping_square and doping_circle methods
• neighbourhood_search function
• allow_extrapolation boolean to optional_interpolation function
• full_gradient to downscale with spatially varying gradients
• calc_gradient to compute neighbourhood gradient
• grid-to-grid and point-to-point variants of distance and count functions
• sea level pressure function
• window function to compute moving window statistics for timeseries
• Gamma transformation
• Calibration with spatially varying calibration curve
• Speed improvement and bux fixes in bilinear function
• Faster implementation of nearest neighbour interpolation for multiple timesteps
• New way of specifying curve-based correction