Validate PDU in admins room

See merge request famedly/conduit!382

fix: adjust CI config to runner requirements

See merge request famedly/conduit!455

- make use of more stable BTRFS driver
- set default pull policy to `if-not-present`

Signed-off-by: The one with the braid <the-one@with-the-braid.cf>

Maybe fix room joins

See merge request famedly/conduit!453

This is a workaround for https://github.com/hyperium/hyper/issues/2312

document `trusted_servers` option

See merge request famedly/conduit!451

partial nix fix

See merge request famedly/conduit!446

Add Contributor's Covenant Code of Conduct

See merge request famedly/conduit!448

fix nix docs

See merge request famedly/conduit!449

I made some silly copy paste errors while writing this...

Signed-off-by: r3g_5z <june@girlboss.ceo>

And offer help since it's pretty easy but impossible if you don't have
Nix installed.

Preparing for v0.5.0 release

See merge request famedly/conduit!443

Make prev_events fetch limit configurable

See merge request famedly/conduit!422

Implement membership ban/join/leave/invite reason

See merge request famedly/conduit!442

Code Cleanup

See merge request famedly/conduit!441

https://rust-lang.github.io/rust-clippy/master/index.html#op_ref

https://rust-lang.github.io/rust-clippy/master/index.html#str_to_string

https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes

improvement: handle restricted joins locally

See merge request famedly/conduit!439

Replace println/dbg calls with corresponding macros from tracing crate

See merge request famedly/conduit!424

Update README

See merge request famedly/conduit!438

fix: jaeger support

See merge request famedly/conduit!437

Upgrade Ruma

See merge request famedly/conduit!435

… and it's good to let people have their own local configs that won't be
tracked by git.