Carview!

Allow first argument of braced!, bracketed!, parenthesized! to be an otherwise unused variable (#1946)

@dishmaker

@dishmaker

Tweaks to improve build speed (#1927, #1928, #1930, #1932, #1934, thanks @dishmaker)

Improve panic message when constructing a LitInt, LitFloat, or Lit from invalid syntax (#1917)
Improve panic message on Punctuated index out of bounds (#1922)

Replace ~const syntax with [const] conditionally const syntax in trait bounds (#1896, rust-lang/rust#139858)
Support conditionally const impl Trait types (#1897)
Reject polarity modifier and lifetime binder used in the same trait bound (#1899, rust-lang/rust#127054)
Parse const trait bounds with bound lifetimes (#1902)
Parse bound lifetimes with lifetime bounds (#1903)
Allow type parameters and const parameters in trait bounds and generic closures (#1904, #1907, #1908, #1909)

Disallow "negative" inherent impls like impl !T {} (#1881, rust-lang/rust#144386)

Releases: dtolnay/syn