chore: release v0.1.0-alpha.6 - #84

--- failure enum_no_repr_variant_discriminant_changed: enum variant had its discriminant change value ---

Description:
The enum's variant had its discriminant value change. This breaks downstream code that used its value via a numeric cast like `as isize`.
        ref: https://doc.rust-lang.org/reference/items/enumerations.html#assigning-discriminant-values
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.50.0/src/lints/enum_no_repr_variant_discriminant_changed.ron

Failed in:
  variant Event::Goaway 4 -> 5 in /tmp/.tmpMwsaBp/turnloop/protocols/turnloop-http/src/http2.rs:136
  variant Event::Ping 5 -> 6 in /tmp/.tmpMwsaBp/turnloop/protocols/turnloop-http/src/http2.rs:140
  variant Event::WindowUpdate 6 -> 7 in /tmp/.tmpMwsaBp/turnloop/protocols/turnloop-http/src/http2.rs:144

--- failure enum_struct_variant_field_added: pub enum struct variant field added ---

Description:
An enum's exhaustive struct variant has a new field, which has to be included when constructing or matching on this variant.
        ref: https://doc.rust-lang.org/reference/attributes/type_system.html#the-non_exhaustive-attribute
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.50.0/src/lints/enum_struct_variant_field_added.ron

Failed in:
  field kind of variant Event::Headers in /tmp/.tmpMwsaBp/turnloop/protocols/turnloop-http/src/http2.rs:104

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.50.0/src/lints/enum_variant_added.ron

Failed in:
  variant Event:Unprocessed in /tmp/.tmpMwsaBp/turnloop/protocols/turnloop-http/src/http2.rs:133