intspan 0.1.0

`IntSpan` handles of sets containing integer spans
Documentation
language: rust
dist: trusty
sudo: required
cache: cargo

rust:
  - stable
  - beta
  - nightly

matrix:
  allow_failures:
    - rust: nightly

jobs:
  include:
    - stage: build
      script: cargo build --verbose --all --examples
    - stage: test
      script:
        - cargo clippy --all-targets --all-features # -- -D warnings
        - cargo test --verbose --all
      before_script:
        - rustup component add clippy
    - stage: coverage
      rust: nightly
      before_install:
        - curl -L https://github.com/mozilla/grcov/releases/latest/download/grcov-linux-x86_64.tar.bz2 | tar jxf -
      script:
        - export CARGO_INCREMENTAL=0
        - export RUSTFLAGS="-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Zno-landing-pads"
        - cargo build --verbose
        - cargo test --verbose
        - |
          zip -0 ccov.zip `find . \( -name "intspan*.gc*" \) -print`;
          ./grcov ccov.zip -s . -t lcov --llvm --branch --ignore-not-existing --ignore-dir "/*" -o lcov.info;
          bash <(curl -s https://codecov.io/bash) -f lcov.info;