Metadata and README updates

[drewoldag]

Updating pyproject.toml so that the links in PyPI go to the correct places.
Also, trying to get logo to show on the README when the README is rendered anywhere other than the main github repo.

[github-actions]

Before [0c8d74f] <v0.1>	After [1d6bb4c]	Ratio	Benchmark (Parameter)
169±2ms	172±0.4ms	1.01	benchmarks.time_learn_loop('KNN', 'UncSampling')
2.64±0.02s	2.66±0.03s	1.01	benchmarks.time_learn_loop('RandomForest', 'RandomSampling')
136±1ms	136±1ms	1	benchmarks.time_feature_creation
2.70±0.02s	2.63±0.01s	0.98	benchmarks.time_learn_loop('RandomForest', 'UncSampling')
171±0.8ms	166±2ms	0.97	benchmarks.time_learn_loop('KNN', 'RandomSampling')

Click here to view all benchmarks.