Repository navigation

Fix JAR manifest lookup and complete typed Attributes Map support #865

Job	Run time
rust_ci (windows-latest, stable)	5m 3s
rust_ci (macos-latest, beta)	4m 37s
rust_ci (windows-latest, beta)	4m 50s
rust_ci (ubuntu-latest, beta)	2m 42s
rust_ci (ubuntu-latest, stable)	3m 10s
rust_ci (macos-latest, stable)	4m 38s
	25m 0s