1.0.46

• Support for implicit format args to match println and other std macros (https://rust-lang.github.io/rfcs/2795-format-args-implicit-identifiers.html)

  let var = ...;
  let error = anyhow!("interpolate {var}");  // equivalent to anyhow!("interpolate {var}", var=var)

• Detect missing fmt arguments at compile time: anyhow!("{} not found") (#55)

• Reduce occurrence of "future cannot be shared between threads safely" in async code using anyhow macros (#186)