chore(release): 1.0.0-alpha.15 [skip ci]

# [1.0.0-alpha.15](https://code.podlibre.org/podlibre/castopod/compare/v1.0.0-alpha.14...v1.0.0-alpha.15) (2020-11-03)

### Features

* **analytics:** add 'other' group to pie charts in order to display more accurate data ([73acef93](https://code.podlibre.org/podlibre/castopod/commit/73acef933ff3485987afc5157de022910876fc12))