chore: bump savvy from 0.4.0 to 0.4.2 in /src/rust

[dependabot[bot]]

Bumps savvy from 0.4.0 to 0.4.2.

Changelog

Sourced from savvy's changelog.

[v0.4.2] (2024-04-01)

New features

• OwnedIntegerSexp and etc now have try_from_iter() method for constructing a new instance from an iterator.

  Example:

  #[savvy]
  fn filter_integer_odd(x: IntegerSexp) -> savvy::Result<Sexp> {
      // is_na() is to propagate NAs
      let iter = x.iter().copied().filter(|i| i.is_na() || *i % 2 == 0);
      let out = OwnedIntegerSexp::try_from_iter(iter)?;
      out.into()
  }
  

• OwnedIntegerSexp and etc now have try_from_slice() method for constructing a new instance from a slice or vec. This conversion is and has been possible via try_from(), but this method was added for discoverability.

• OwnedIntegerSexp and etc now have try_from_scalar() method for constructing a new instance from a scalar value (e.g. i32). This conversion is and has been possible via try_from(), but this method was added for discoverability.

• savvy-cli update and savvy-cli init now tries to parse the Rust files actually declared by mod keyword.

[v0.4.1] (2024-03-30)

Breaking changes

• Sexp loses is_environment() method becuase this isn't useful, considering savvy doesn't support environment.

New features

• get_dim() and set_dim() are now available also on Sexp.

• Now savvy allows to consume the value behind an external pointer. i.e., T instead of &T or &mut T as the argument. After getting consumed, the pointer is null, so any function call on the already-consumed R object results in an error. See the guide for more details.

  Example:

... (truncated)

Commits

• 6f991ad chore: Release
• 862cf71 Parse mod declarations (#148)
• 0dd1d3f Some followup to #145 (#146)
• 0b45c86 Optimize constructors for LogicalSexp and StringSexp (#145)
• 40a42b5 Tweak guide and code comments
• 8356351 Update guide [skip ci]
• d617e27 Implement try_from_scalar() (#144)
• e07eb1b Implement try_from_slice() (#143)
• cc8df60 Implement try_from_iter() (#140)
• bee3c73 Fix psuedo code [skip ci]
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like savvy is up-to-date now, so this is no longer needed.