0.4.0

[0.4.0] - 2020-06-04

Added

• PR#9 added the optional targets feature, which allows matching the various target_ predicates against a target_lexicon::Triple.

Changed

• PR#9 changed the Arch, Vendor, Os, and Env types to no be longer enums, and are instead thin wrappers around strings. This allows for custom targets where one or more components of the target triple are not built-in to rustc. Resolved #8.
• Changed ParseError to remove the lifetime and just keep an owned string of the expression that failed to parse.
• Updated the list of built-in rustc targets to 1.43.1.