- Added group summary lines to slopegraphs
- Added ability to color effect size curves and the constrast bars and delta text via using custom_palette to paired plots

Constructing MultiContrast class with a 2d array in the form of a nested list now works to produce a 2d vortexmap.

now custom_palette dictionary can accept 0 and 1 to fill barplots

…t keys

Updated slopegraph visuals and additional custom_palette options

updated the design of slopegraphs to remove raw bars and include a group summary (central tendency line with error bars)
Added additional coloring options:
- custom_palette dict for unpaired prop plots (bar plots) can now take 0 and 1 as keys to color the filled and unfilled portions of the plots
- custom_palette usage with in paired plots can now color the contrast bars and effect size curves

1. multi.ipynb was re-written to enable integration with forest_plot.
* MultiContrast (mc) object data loading now incorporates Jonny's thorough data validations from forest_plot()
* mc object now has a method forest_plot() that plots a forest_plot from 1-D mc objects using existing forest_plot code.
2. 10-multicontrast.ipynb tutorial edited accordingly.
TODO: add unit test for mc

putting multi contrast commits into rebased vnbdev branch

updated labels to remove additional capitalisations beyond the first word

Changes mini-meta weighting to use the variance of the bootstrapped resampled mean difference distribution, rather than the sample variance. See Cochrane handbook (https://www.cochrane.org/authors/handbooks-and-manuals/handbook/current/chapter-10)

There is an issue with the permutation t-test pvalue test that I'm not sure how to fix at the moment, commented out for now.

Updated baseline image for mini-meta forest plot test to presumably account for the slightly different weighted deltas. This is so pytest can stop failing on Github

Fixes mini-meta weight calculation

Minor fixes for 2d mc forest plot integration
Name change to whorlmap
Rearranging tutorial order

…nto vnbdev

- fixed whorlmap issues, added some kwargs, and trimmed some of the code
- updated readme and changelog
- updated dabest version date
- updated tutorials and baseline images