Henrik Stromberg

Chapter 1.5 of the docs contains the following listing: ``` assert_eq!( root.data(), &9 ); let root = tree.root_mut(); *root.data_mut() = 0; ``` However it is missing mutability for root in...

Fix failing docs build on crates.io

1

Suppress build on crates.io by checking DOCS_RS to circumvent failing of building docs without internet connection as is the situation on crates.io