Moving custom ecto types in context folders

See merge request !2652

Remove `poll` from `notification_type` OpenAPI spec

Closes #1867

See merge request !2657

User: Add raw_bio, storing unformatted bio

See merge request pleroma/pleroma!2326

Update elixir image used for OTP releases

See merge request pleroma/pleroma!2654

This is necessary since we bumped required version of elixir to 1.9.

The dlsym bug should be gone by now.

Chunk the notification type backfill migration

See merge request pleroma/pleroma!2653

Long-term we want that migration to be done entirely in SQL,
but for now this is a hotfix to not cause OOMs on large databases.

This is using a homegrown version of `Repo.stream`, it's worse in
terms of performance than the upstream since it doesn't use the same
prepared query for chunk queries, but unlike the upstream it supports
preloads.

Resolve "/api/v1/conversations returns the wrong `last_status`"

Closes #1866

See merge request pleroma/pleroma!2647

Upgrade to Elixir 1.9

See merge request pleroma/pleroma!2651

Mogrify args in adminFE

Closes #1787

See merge request pleroma/pleroma!2616

warning: :hackney_connect.partial_chain/1 is undefined or private

Merge OGP parser with TwitterCard

Closes #1835

See merge request pleroma/pleroma!2642

Mastodon API return full result set in notifications

See merge request pleroma/pleroma!2552

Mastodon API: ensure the notification endpoint doesn't return less than the requested amount of records unless it's the last page

StatusController: Correctly paginate favorites.

Closes #1851

See merge request pleroma/pleroma!2636

Update pleroma.nginx to support TLSv1.3

See merge request pleroma/pleroma!2644

ActivityPub: Don't show announces of your own objects in timeline.

See merge request pleroma/pleroma!2637