2018-12-15-271-master-8239134: Merge pull request #77 from hdhoang/stm32l1-upgrade

stm32l1 upgrade

2018-12-08-269-master-47ba245: Merge pull request #76 from hdhoang/cortex-upgrade-2

stop-gap upgrade to cortex-m@0.5

2018-10-21-251-master-966cbdc: Merge pull request #79 from hdhoang/travis-opt

fix papercuts with travis

2018-10-15-249-master-16ed3c6: Merge pull request #75 from hdhoang/cortex-upgrade

upgrade dependencies, part 1

2018-10-02-240-master-355a73a: Merge pull request #74 from hdhoang/make-experience

Improve developer experience

2018-09-03-235-master-dbd51bf: Merge pull request #72 from hdhoang/nightly-2018-08-24

upgrade to a recent nightly

2018-05-22-229-master-43d5e93: Merge pull request #67 from hdhoang/macos-ci

fix CI

2018-05-22-226-master-0360ab4: Merge pull request #66 from hdhoang/macos-ci

macOS CI

2018-05-09-214-master-14ceb8a: Merge pull request #62 from hdhoang/stm32-rs

switch to adamgreig/stm32-rs

2018-04-12-209-master-aee0f1b: Merge pull request #55 from hdhoang/cargo_target

cortex-m-rt 0.4