v16.0.0

"Gringos" American Food Coca Cola cow's head

BREAKING:
  * ops::ConfigOperation::SetDebugMode(bool) -> SetBuildProfile(Cow<'static, str>)
                                 (true/false -> "dev"/"release")
  * ops::PackageConfig::build_profile: Option<Cow<'static, str>> added
            alongside ::debug it encodes the full spectrum of build profiles,
    be it dev/release/test/bench or set in ~/.cargo/config.toml [profile.gaming]
    (55550eafd8e82910c5d7567ba579fc8b47afb8a2)
    (#282)

Changed:
  * .crates2.json "profile" key honoured even if not "debug"
  * cargo install-update-config output from
      Debug mode     true|false
    to
      Build profile  $profile
    (55550eafd8e82910c5d7567ba579fc8b47afb8a2)
    (#282)

New:
  * cargo install-update-config --build-profile=PROFILE
    (--debug   is --build-profile=dev
     --release is --build-profile=release)
    (55550eafd8e82910c5d7567ba579fc8b47afb8a2)
    (#282)