2.0.66

• Allow braced structs when parsing ExprLet (#1671)

2.0.65

• Optimize the implementation of Fold to compile faster (#1666, #1667, #1668)

2.0.64

• Support using ParseBuffer across catch_unwind (#1646)
• Validate that the expression in a let-else ends in brace as required by rustc (#1648, #1649)
• Legalize invalid const generic arguments by wrapping in braces (#1654, #1655)
• Fix some expression precedence edge cases involving break and return in loop headers (#1656)
• Always print closure bodies with a brace when the closure has an explicit return type (#1658)
• Automatically insert necessary parentheses in ToTokens for Expr when required by expression precedence (#1659)
• Support struct literal syntax in match guard expressions (#1662)

2.0.63

• Parse and print long if-else-if chains without reliance on deep recursion to avoid overflowing stack (#1644, #1645)

2.0.62

• Reject invalid unparenthesized range and comparison operator expressions (#1642, #1643)

2.0.61

• Check for legal binding name in the ident of Pat::Ident (#1627)
• Resolve unexpected_cfgs warning (#1635)

2.0.60

• Improve how None-delimited groups are counted by peek (#1625)

2.0.59

• Parse c"…" and cr"…" C-string literal syntax as Lit::CStr (#1502)

2.0.58

• Support $ in custom_punctuation! macro (#1611)

2.0.57

• Eliminate dependency on quote when built with default-features disabled and the "proc-macro" feature enabled (#1608, thanks @BD103)