General Cargo.toml cleanup. (#529)

* General Cargo.toml cleanup.

 - Remove travis-ci attributes.
 - Remove "experimental" badges from actively-developed crates.
 - Reflow some long lines.
 - Use dependency features consistently.
 - Add readme attributes

* Update WASI to the latest trunk.

This notably adds a .gitignore file for the WASI directory.

crates/wasi-common/Cargo.toml

@@ -2,13 +2,13 @@
 name = "wasi-common"
 version = "0.5.0"
 authors = ["The Wasmtime Project Developers"]
-edition = "2018"
-license = "Apache-2.0 WITH LLVM-exception"
 description = "WASI implementation in Rust"
+license = "Apache-2.0 WITH LLVM-exception"
 categories = ["wasm"]
 keywords = ["webassembly", "wasm"]
 repository = "https://github.com/CraneStation/wasmtime"
 readme = "README.md"
+edition = "2018"
 
 [features]
 # this feature requires wasm32-wasi target installed, and it enables wasm32
@@ -16,7 +16,7 @@ readme = "README.md"
 wasm_tests = []
 
 [dependencies]
-wasi-common-cbindgen = { path = "wasi-common-cbindgen", version = "0.5.0" }
+wasi-common-cbindgen = { path = "wasi-common-cbindgen" }
 anyhow = "1.0"
 thiserror = "1.0"
 libc = "0.2"
@@ -26,13 +26,13 @@ log = "0.4"
 filetime = "0.2.7"
 lazy_static = "1.4.0"
 num = { version = "0.2.0", default-features = false }
-wig = { path = "wig", version = "0.1.0" }
+wig = { path = "wig" }
 
 [target.'cfg(unix)'.dependencies]
 nix = "0.15"
 
 [target.'cfg(windows)'.dependencies]
-winx = { path = "winx", version = "0.5.0" }
+winx = { path = "winx" }
 winapi = "0.3"
 cpu-time = "1.0"
 
@@ -42,7 +42,7 @@ wasmtime-environ = { path = "../environ" }
 wasmtime-jit = { path = "../jit" }
 wasmtime-wasi = { path = "../wasi" }
 wasmtime = { path = "../api" }
-cranelift-codegen = "0.49"
+cranelift-codegen = "0.49.0"
 target-lexicon = "0.9.0"
 pretty_env_logger = "0.3.0"
 tempfile = "3.1.0"
@@ -55,3 +55,5 @@ cfg-if = "0.1.9"
 name = "wasi_common"
 crate-type = ["rlib", "staticlib", "cdylib"]
 
+[badges]
+maintenance = { status = "actively-developed" }