Update extendr-api requirement from 0.4.0 to 0.6.0 in /r-harmonium/src/rust

[dependabot[bot]]

Updates the requirements on extendr-api to permit the latest version.

Changelog

Sourced from extendr-api's changelog.

0.6.0

Added

• ALTLIST support allowing users to represent structs as R list objects
• [either] TryFrom<&Robj> for Either<T, R> and From<Either<T, R>> for Robj if T and R are themselves implement these traits. This unblocks scenarios like accepting any numeric vector from R via Either<Integers, Doubles> without extra memory allocation [#480](extendr/extendr#480)
• PartialOrd trait implementation for Rfloat, Rint and Rbool. Rfloat and Rint gained min() and max() methods [#573](extendr/extendr#573)
• use_rng option for the extendr attribute macro, which enables the use of random number sampling methods from R, e.g. #[extendr(use_rng = true) [#476](extendr/extendr#476)
• [T; N] conversions to Robj [#594](extendr/extendr#594)
• ToVectorValue for Rfloat, Rint and Rbool [#593](extendr/extendr#593)
• TryFrom<_> on Vec<_> for Integers (i32), Complexes (c64), Doubles (f64), and Logicals (bool / i32). [#593](extendr/extendr#593)
• Rstr can now be constructed from Option<String> [#630](extendr/extendr#630)

Fixed

• You can now create ArrayView1 from &Robj as well as Robj [#501](extendr/extendr#501)
• Raw literals from Rust can be used for function and argument names. e.g. fn r#type() in Rust is converted to type() in R. [#531](extendr/extendr#531)
• Fix memory leaks on errors and panics [#555](extendr/extendr#555)
• Fixed error when collecting too many objects into List, etc. [#540](extendr/extendr#540)

0.4.0

Added

• Support for setting the default value of arguments to struct methods, using #[default = "..."] [#436](extendr/extendr#436)
• [ndarray] TryFrom<&Robj> for ArrayView1<T> and ArrayView2<T>, where T is i32, f64, c64, Rint, Rfloat, Rcplx, Rstr, Rbool [#443](extendr/extendr#443)
• Debug trait implementation for Rcplx and Complexes [#444](extendr/extendr#444)
• TryFrom<Robj>, From<Option<T>>, Into<Option<T>> and their variations for Nullable<T> [#446](extendr/extendr#446)
• Nullable<T>::map() that acts on not null value and propagates NULL [#446](extendr/extendr#446)
• [ndarray] Conversion from owned arrays (ie ndarray::Array) into Robj [#450](extendr/extendr#450)
• [ndarray][docs] Documentation for the robj_ndarray module [#450](extendr/extendr#450)
• Sum for scalars like Rint, Rfloat and Rcplx, which accept Iterator<Item = &Rtype> [#454](extendr/extendr#454)
• A new collect_rarray method that can be used to collect arbitrary iterables into an R matrix [#466](extendr/extendr#466)
• [docs] Documentation for RArray::new_matrix() [#466](extendr/extendr#466)

Changed

• [docs] Use bindgen on docs.rs, to ensure newer R features will still be documented [#426](extendr/extendr#426)
• Unify the tagging mechanism used to identify Rust types inside ExternalPtr. This allows #[extendr]-annotated functions to directly accept ExternalPtr<MyStruct> as well as MyStruct [#433](extendr/extendr#433)
• Nullable<T> is now part of extendr_api::prelude [#446](extendr/extendr#446)
• Bump the Rust edition from 2018 to 2021 [#458](extendr/extendr#458)
• When converted to STRSXP, strings are now correctly marked as UTF-8 even on non-UTF-8 platforms (i.e., R < 4.2 on Windows), which shouldn't matter for most of the users [#467](extendr/extendr#467)

... (truncated)

Commits

• 478c05e Release v0.6.0 (#637)
• d44aaa4 Update syn crate to version 2 (#587)
• 78cec79 Disable macros snapshot test if on nightly toolchain (#631)
• 1b29fb9 Add Option\<String> conversion to Rstr (#630)
• 07914b8 Make Rfloat, Rint, and friends ToVectorValue. (#593)
• 5fd7c7d Use c_char instead of u8 (#629)
• ffc02db Fix non-Api calls issue in R packages (#627)
• 2992da0 Fix a typo (#625)
• c7b0f01 Use once_cell instead of lazy_static (#618)
• 654d606 Ignore extendrtests.Rcheck wherever they may appear (#622)
• Additional commits viewable in compare view

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