Fails to build on recent nightly (2018-07-17) #252

   Compiling stdweb-internal-macros v0.1.0
error[E0432]: unresolved import `stdweb_internal_macros::js_export`
   --> /home/travis/.cargo/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.7/src/lib.rs:136:9
    |
136 | pub use stdweb_internal_macros::js_export;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `js_export` in the root
error: aborting due to previous error
For more information about this error, try `rustc --explain E0432`.
error: Could not compile `stdweb`.
error: build failed