Build fails

[timvw]

Describe the bug
Currently a "cargo build" fails with the following error:
error[E0599]: no function or associated item named from_str_unchecked found for struct proc_macro2::Literal in the current scope
--> /Users/timvw/.cargo/registry/src/github.com-1ecc6299db9ec823/quote-1.0.11/src/runtime.rs:301:41

To Reproduce
cargo build

Expected behavior
the build does not fail

[timvw]

PEBKAC: was still working on outdated fork.

[haoxins]

#1498
#1499
#1523

I think the only thing is to publish a new version on crates.io