pkgtreediff-0.4: dependencies

Dependencies for pkgtreediff-0.4

pkgtreediff	async base (<5) directory filepath Glob http-client (>=0.5.0) http-client-tls http-directory (>=0.1.4 && <0.1.6 \|\| >=0.1.8) simple-cmd (>=0.1.4) simple-cmd-args text if impl(ghc<8.0) semigroups