v0.8.0

PSIS v0.8.0

Diff since v0.7.2

Merged pull requests:

• Remove improved and sorted keywords (#45) (@sethaxen)
• Improve support for (multi-)dimensional arrays (#46) (@sethaxen)
• Tweaks to fit_gpd usage (#47) (@sethaxen)
• Log-normalize log weights by default (#48) (@sethaxen)
• Support array inputs of shape (draws, [chains[, parameters...]]) (#49) (@sethaxen)
• Update version number for release (#50) (@sethaxen)