message: changelog for 2.1.0
diff: # Change Log
  +## [2.1.0](https://github.com/onqtam/doctest/tree/2.1.0) (2018-11-30)
  +[Full Changelog](https://github.com/onqtam/doctest/compare/2.0.1...2.1.0)
  +
  +**Closed issues:**
  +
  +- doctest::String ctor with non-zero terminated string [\#165](https://github.com/onqtam/doctest/issues/165)
  +- thread\_local is not supported on iOS 9.0 [\#164](https://github.com/onqtam/doctest/issues/164)
  +- Compiler error on Android NDK r18 [\#163](https://github.com/onqtam/doctest/issues/163)
  +- \[question\] One setup for multiple tests [\#160](https://github.com/onqtam/doctest/issues/160)
  +- clang unwanted warning in user code [\#156](https://github.com/onqtam/doctest/issues/156)
  +- Unsigned integer overflow in fileOrderComparator [\#151](https://github.com/onqtam/doctest/issues/151)
  +- ThreadSanitizer: signal-unsafe call inside of a signal [\#147](https://github.com/onqtam/doctest/issues/147)
  +- Feature request: check for exception string \(like Catch's CHECK\_THROWS\_WITH\) [\#97](https://github.com/onqtam/doctest/issues/97)
  +
  +**Merged pull requests:**
  +
  +- Fixed build error under Android NDK [\#162](https://github.com/onqtam/doctest/pull/162) ([tals](https://github.com/tals))
  +- Added clang-7 to travis build [\#161](https://github.com/onqtam/doctest/pull/161) ([AMS21](https://github.com/AMS21))
  +- Remove clang-tidy warnings for static fields created by doctest [\#159](https://github.com/onqtam/doctest/pull/159) ([rantasub](https://github.com/rantasub))
  +- Make it possible to change the command line options prefix [\#158](https://github.com/onqtam/doctest/pull/158) ([tbleher](https://github.com/tbleher))
  +
  ## [2.0.1](https://github.com/onqtam/doctest/tree/2.0.1) (2018-10-24)
  [Full Changelog](https://github.com/onqtam/doctest/compare/2.0.0...2.0.1)
  