cb1d65d02c
* add a Dark Science extension * add a work-around to not have the app think there’s missing chapters * applied some changes suggested in PR #3435 * rework chapter fetching to not block, fix URL invariant for SManga * cleanup --------- Co-authored-by: AwkwardPeak7 <48650614+AwkwardPeak7@users.noreply.github.com>