Allow creating `Vec`s of and implement `TryFrom<JsValue>` for strings… #1360

Job	Run time
Clippy	7m 43s
Check	1m 58s
Run wasm-bindgen crate tests (unix)	12m 18s
Verify that web-sys is compiled correctly	2m 3s
Rustfmt	21s
Run js-sys crate tests	3m 54s
Run native tests	4m 14s
Run wasm-bindgen crate tests with multithreading enabled	5m 45s
Run web-sys crate tests	8m 28s
Run wasm-bindgen-webidl crate tests	3m 20s
build_benchmarks	1m 35s
build_examples	4m 37s
build_nightly	2m 39s
dist_linux_x86_64_musl	4m 18s
dist_linux_aarch64_gnu	4m 38s
dist_macos_x86_64	3m 58s
Build and test the deno example	1m 23s
Test TypeScript output of wasm-bindgen	1m 33s
Run UI compile-fail tests	4m 5s
dist_macos_aarch64	3m 3s
dist_windows	4m 43s
doc_api	1m 25s
doc_book	11s
test_examples	3m 38s
deploy	1m 51s
	1h 33m 41s

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