Fix the matrix.to link so that the room history can be viewed in
"Matrix-Static" by users who aren't registered on Matrix (e.g. for
previewing). Hopefully this will also get the room content into search
engines.
n.b. The new matrix.to URL uses the room name instead of the room ID,
because the ID didn't work with Matrix-Static, and the matrix.to README at:
https://github.com/matrix-org/matrix.to says...
"Note that linking to rooms by ID should only be used for rooms to which
the target user has been invited: these links cannot be assumed to work for
all visitors."
245: add CONTRIBUTING.md and link to Matrix room r=korken89 a=nils-grepit
Inspired by the Rust lang [CONTRIBUTING.md](https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md), but small. There might be more we want to use from there.
246: turn git deps into crates.io deps r=korken89 a=japaric
required for publishing v0.5.0-beta
Co-authored-by: nils-grepit <nils.fitinghoff@grepit.se>
Co-authored-by: Jorge Aparicio <jorge@japaric.io>
