Major release 3.0

[djmitche]

We had discussed a major release for a few things:

• Async Storage and Server traits (Add WASM/async support via feature flag #599)
• Updates to the ServerConfig trait for arbitrary S3 backends (Sync to custom S3 apis #546)

We are close enough that we should plan to push through and get 3.0.0 out the door: wrap up #546 and consider if there are any other anticipated changes that would warrant a major version bump.

[djmitche]

I think everything is ready for this release! Here's the cargo-semver-checks report:

--- failure enum_missing: pub enum removed or renamed ---

Description:
A publicly-visible enum cannot be imported by its prior path. A `pub use` may have been removed, or the enum itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/enum_missing.ron

Failed in:
  enum taskchampion::storage::StorageConfig, previously in file /home/dustin/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/taskchampion-2.0.3/src/storage/config.rs:13
  enum taskchampion::StorageConfig, previously in file /home/dustin/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/taskchampion-2.0.3/src/storage/config.rs:13

--- 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/v0.45.0/src/lints/enum_struct_variant_field_added.ron

Failed in:
  field endpoint_url of variant ServerConfig::Aws in /home/dustin/p/taskchampion/src/server/config.rs:108
  field force_path_style of variant ServerConfig::Aws in /home/dustin/p/taskchampion/src/server/config.rs:111
  field endpoint_url of variant ServerConfig::Aws in /home/dustin/p/taskchampion/src/server/config.rs:108
  field force_path_style of variant ServerConfig::Aws in /home/dustin/p/taskchampion/src/server/config.rs:111

--- failure trait_added_supertrait: non-sealed trait added new supertraits ---

Description:
A non-sealed trait added one or more supertraits, which breaks downstream implementations of the trait
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#generic-bounds-tighten
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/trait_added_supertrait.ron

Failed in:
  trait taskchampion::storage::Storage gained Send in file /home/dustin/p/taskchampion/src/storage/mod.rs:161

--- failure trait_requires_more_generic_type_params: trait now requires more generic type parameters ---

Description:
A trait now requires more generic type parameters than it used to. Uses of this trait that supplied the previously-required number of generic types will be broken. To fix this, consider supplying default values for newly-added generic types.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-parameter-no-default
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/trait_requires_more_generic_type_params.ron

Failed in:
  trait Replica (0 -> 1 required generic types) in /home/dustin/p/taskchampion/src/replica.rs:72

--- failure type_requires_more_generic_type_params: type now requires more generic type parameters ---

Description:
A type now requires more generic type parameters than it used to. Uses of this type that supplied the previously-required number of generic types will be broken. To fix this, consider supplying default values for newly-added generic types.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-parameter-no-default
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/type_requires_more_generic_type_params.ron

Failed in:
  Struct Replica (0 -> 1 required generic types) in /home/dustin/p/taskchampion/src/replica.rs:72

Summarizing:

• StorageConfig has been removed and storage instances are now to be created directly.
• ServerConfig::Aws has two new fields (and, not detected here, the type of region has changed)
• Storage now requires Send
• Replica now takes a type parameter S implementing Storage

Not detected above:

• All Replica methods are now async
• ServerConfig::Aws::region is now Option<String>
• All Storage and StorageTxn methods are now async
• AWS no longer uses IMDS
• MSRV bump to 1.88.0

(these may have been omitted above due to other changes to those types?)

Non-breaking changes of note:

• WASM support - IndexedDB storage + server-sync
• Improved performance making snapshots (Buffer input to Zlib to improve perf #593)
• server-aws, server-gcp, and server-sync all use the same HTTP backend, unifying behavior and moderately reducing binary size
• expanded set of allowed tags (relax restrictions on tag chars after first, following TaskWarrior #659)

[djmitche]

https://github.com/GothenburgBitFactory/taskchampion/releases/tag/v3.0.0!