either 1.2.0

The enum `Either`, with variants `Left` and `Right` and trait implementations including Iterator, Read, Write. Either has methods that are similar to Option and Result. Includes convenience macros `try_left!()` and `try_right!()` to use for short-circuiting logic.
Documentation 
language: rust
sudo: false

# run builds for all the trains (and more)
rust:
  - 1.12.0
  - stable
  - beta
  - nightly

# load travis-cargo
before_script:
  - |
      pip install 'travis-cargo<0.2' --user &&
      export PATH=$HOME/.local/bin:$PATH

branches:
  only:
    - master
# the main build
script:
  - |
      travis-cargo build &&
      travis-cargo test &&
      travis-cargo bench &&
      travis-cargo doc

env:
  global:
    # override the default `--features unstable` used for the nightly branch (optional)
    - TRAVIS_CARGO_NIGHTLY_FEATURE=""