Switch object dep to crates.io

Author: alexcrichton

Cargo.toml

@@ -41,7 +41,7 @@ compiler_builtins = { version = '0.1.2', optional = true }
 addr2line = { version = "0.12.0", optional = true, default-features = false }
 miniz_oxide = { version = "0.3.7", optional = true }
 [dependencies.object]
-git = "https://github.com/gimli-rs/object.git"
+version = "0.20.0"
 optional = true
 default-features = false
 features = ['read_core', 'elf', 'macho', 'pe', 'unaligned']