0.4.16

• Hide some distracting stderr output when checking nightly support (#123)

0.4.15

• Provide Span::unstable method whenever nightly feature is enabled (#121)

0.4.14

• Automatically utilize libproc_macro rich API when building on 1.30.0+ (#120)

0.4.13

• Implement Extend<TokenStream> for TokenStream (#117)
• Optimize Extend<TokenTree> for TokenStream when building with "nightly" feature (#114)

0.4.12

• Restore support for musl targets that provide a binary releases of the compiler for musl

0.4.11

• Restore compatibility with old compilers (#112)

0.4.10

• Support building for wasm which has no proc-macro crate (#111)

0.4.9

• Fix compile on nightly

0.4.8

• Pick up fine-grained proc_macro feature gates introduced in rust-lang/rust#52081

0.4.7

• impl Default for TokenStream (#106, thanks @H2CO3)