Parse results of block doc comments are different between 1.0.13 and 1.0.14

[magurotuna]

Let me take the following code (focusing on a block doc comment) as an example:

/** foo */
fn bar() {}

I attempted to parse the above code using syn::parse_file.

In proc-macro2 v1.0.14+, the output of parsing looks like:

Attribute {
    pound_token: Pound,
    style: Outer,
    bracket_token: Bracket,
    path: Path {
        leading_colon: None,
        segments: [
            PathSegment {
                ident: Ident(
                    doc,
                ),
                arguments: None,
            },
        ],
    },
    tokens: TokenStream [
        Punct {
            op: '=',
            spacing: Alone,
        },
        Literal {
            lit: " foo ", // <------------ (*)
        },
    ],
},

while in v1.0.13, the output is:

Attribute {
    pound_token: Pound,
    style: Outer,
    bracket_token: Bracket,
    path: Path {
        leading_colon: None,
        segments: [
            PathSegment {
                ident: Ident(
                    doc,
                ),
                arguments: None,
            },
        ],
    },
    tokens: TokenStream [
        Punct {
            op: '=',
            spacing: Alone,
        },
        Literal {
            lit: "/** foo */", // <------------ (*)
        },
    ],
},

Seeing the line marked with <--- (*), the results are different. This is probably a breaking change to the users.
In my opinion, according to semantic versioning, the major version should have been updated. What do you think about it?

[dtolnay]

You're right! Sorry about the breakage.

[magurotuna]

No worries :)