release: Prep v0.4.0 for release + update CHANGELOG.md (#29)

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "wolfram-app-discovery"
-version = "0.3.0"
+version = "0.4.0"
 license = "MIT OR Apache-2.0"
 readme = "README.md"
 repository = "https://github.com/WolframResearch/wolfram-app-discovery-rs"

docs/CHANGELOG.md

@@ -10,6 +10,57 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 
 
+## [0.4.0] — 2022-12-14
+
+### Added
+
+* Added support for app discovery on Linux ([#28])
+
+  This address issue [#27].
+
+  [`discover()`](https://docs.rs/wolfram-app-discovery/0.4.0/wolfram_app_discovery/fn.discover.html)
+  will now return all Wolfram apps found in the default installation location
+  on Linux (currently just `/usr/local/Wolfram/`).
+
+  [`WolframApp::from_app_directory()`](https://docs.rs/wolfram-app-discovery/0.4.0/wolfram_app_discovery/struct.WolframApp.html#method.from_app_directory)
+  can now be used to get information on a Wolfram app installed in a non-standard
+  location.
+
+  The following `WolframApp` methods are now supported on Linux:
+
+  - [`WolframApp::installation_directory()`](https://docs.rs/wolfram-app-discovery/0.4.0/wolfram_app_discovery/struct.WolframApp.html#method.installation_directory)
+  - [`WolframApp::kernel_executable_path()`](https://docs.rs/wolfram-app-discovery/0.4.0/wolfram_app_discovery/struct.WolframApp.html#method.kernel_executable_path)
+  - [`WolframApp::wolframscript_executable_path()`](https://docs.rs/wolfram-app-discovery/0.4.0/wolfram_app_discovery/struct.WolframApp.html#method.wolframscript_executable_path)
+  - [`WolframApp::wstp_static_library_path()`](https://docs.rs/wolfram-app-discovery/0.4.0/wolfram_app_discovery/struct.WolframApp.html#method.wstp_static_library_path)
+
+* Added custom logic for determining app metadata, in the absence of an
+  available standard OS-provided format or API. At the moment, this consists
+  of parsing LICENSE.txt and the WolframKernel script for the application type
+  and version number, respectively.
+
+  This is likely more fragile than the implementation methods used on macOS and
+  Windows, but necessary and sufficient for the time being to get discovery
+  working for the most common use-cases. Future improvements are expected.
+
+### Changed
+
+#### Backwards Incompatible
+
+  - Changed the [`AppVersion::build_code()`] method to return `Option<u32>`
+    (was `u32`). ([#28])
+
+### Fixed
+
+  - Fixed an issue with platform unsupported error generated by
+    `WolframApp::installation_directory()` incorrectly reporting that the error
+    was in `WolframApp::from_app_directory()`. ([#28])
+
+  - Filled in an erroneously incomplete `todo!()` in the `Display` impl for
+    `Error`. ([#28])
+
+
+
+
 ## [0.3.0] – 2022-09-19
 
 ### Added
@@ -172,10 +223,14 @@ Initial release of `wolfram-app-discovery`.
 [#24]: https://github.com/WolframResearch/wolfram-app-discovery-rs/pull/24
 [#25]: https://github.com/WolframResearch/wolfram-app-discovery-rs/pull/25
 
+<!-- v0.4.0 -->
+[#27]: https://github.com/WolframResearch/wolfram-app-discovery-rs/issues/27
+[#28]: https://github.com/WolframResearch/wolfram-app-discovery-rs/pull/28
 
 <!-- This needs to be updated for each tagged release. -->
-[Unreleased]: https://github.com/WolframResearch/wolfram-app-discovery-rs/compare/v0.3.0...HEAD
+[Unreleased]: https://github.com/WolframResearch/wolfram-app-discovery-rs/compare/v0.4.0...HEAD
 
+[0.4.0]: https://github.com/WolframResearch/wolfram-app-discovery-rs/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/WolframResearch/wolfram-app-discovery-rs/compare/v0.2.2...v0.3.0
 [0.2.2]: https://github.com/WolframResearch/wolfram-app-discovery-rs/compare/v0.2.1...v0.2.2
 [0.2.1]: https://github.com/WolframResearch/wolfram-app-discovery-rs/compare/v0.2.0...v0.2.1