point to a bitvec branch for now
the currently published crate is missing the offset functions on
BitSlice
@@ -34,7 +34,9 @@ regexp = ["regex"]
lexical = ["lexical-core"]
[dependencies.bitvec]
-version = "0.19"
+#version = "0.19"
+git = "https://github.com/myrrlyn/bitvec"
+branch = "feature/21"
optional = true
default-features = false
