* build-testing better supported
* Add formatting to Azure
* Adding more jobs to Azure
* Control
* Allow libc++ to be used on linux
* Fix modernize message
* Fix variable
* fixup! Fix modernize message
* Drop auto exp. optional
* Update readme, better user id in docker
* Fix BUILD_TESTING
* Drop format from travis, leave tidy for now
* Check tidy and format
* Tidy fully on Azure now
* Adding first draft of Sets
Use IsMember now
Using IsMember as backend for Set
Non-const validator backend
Move set tests to set
Clearer inits
* Drop shortcut
Tighten up classes a bit for MSVC
Check with GCC 4.8 too
* Simpler templates, but more of them
Dropping more type safety for older compilers
Shortcut string set
* Adding shortcut init
Making g++ 4.7 docker image happy
Fix Clang tidy issue with last commit
Adding one more shortcut, adding a couple of tests
* Dropping dual pointer versions of code
* Smarter shortcut syntax
* Adding slighly faster choices
* Cleanup to make InMember simpler
* Drop choices for now, adding some tests
* ValidationError is now always the error from a validator
* Support for other types of initializer lists, including enums
* Factor out type utilities, single version of IsMember code
* Adding a few tests for #224
* Minor cleanup for Validation Error
* Adding tests, moved deprecated tests
* Docs updates
* Addind simple flag callback
* Give flag function a new name, old name only on C++14
* Fixing reference to destroyed function
* Better GCC 4.7 support, travis prepared for C++17 (not used yet)
* Updating documentation
