Cargo outdated

[martinfrances107]

It has been a few years since the last release, and 'syn' a has received a major update.

This is a not a bug, but a request for maintenance.
Many of the sub-packages I am using are on syn 2.x, whereas this package is on syn 1.x

Here is the result of running "cargo outdated" on the project today

Name                        Project  Compat  Latest   Kind         Platform
----                        -------  ------  ------   ----         --------
proc-macro2->unicode-ident  1.0.8    ---     Removed  Normal       ---
quote->proc-macro2          1.0.56   ---     Removed  Normal       ---
runtime-macros-derive       0.4.0    ---     0.6.0    Development  ---
serde->serde_derive         1.0.160  ---     Removed  Normal       ---
serde_derive->proc-macro2   1.0.56   ---     Removed  Normal       ---
serde_derive->quote         1.0.26   ---     Removed  Normal       ---
serde_derive->syn           2.0.15   ---     Removed  Normal       ---
syn                         1.0.109  ---     2.0.15   Normal       ---
syn->proc-macro2            1.0.56   ---     Removed  Normal       ---
syn->quote                  1.0.26   ---     Removed  Normal       ---
syn->unicode-ident          1.0.8    ---     Removed  Normal       ---
toml->serde                 1.0.160  ---     Removed  Normal       ---
trybuild                    1.0.22   ---     1.0.80   Development  ---
trybuild->lazy_static       1.4.0    ---     Removed  Normal       ---
trybuild->toml              0.5.11   ---     Removed  Normal       ---

Is this crate being actively maintained?
Would PR where I update syn be considered?

[anthraxx]

Gentle ping @mcarton