Beauty from Random States
- Adds random state parameter for PCA, tSNE, synthetic doublet creation in BoostClassifer - closes #106
- Adds random state parameter for PCA, tSNE in tsne plot
- tsne plot returns PhenoGraph communities - closes #109
- tsne plot accepts array-like through sklearn check array - closes #104
- improves readability of threshold plot - closes #102
- notebook uses voter threshold of 0.8 (non-default)