fix(Binaries): Alway add operator (e.g. =) to semver requirements; add helper methods to `BinaryInstallation`
fix(Binaries): Alway add operator (e.g. =) to semver requirements; add helper methods to `BinaryInstallation`

stencila/stencila,stencila/stencila,stencila/stencila,stencila/stencila,stencila/stencila,stencila/stencila,stencila/stencila