* Generator support will come back later, reworked
* Removed `Catch::toString` support
* The new stringification machinery uses `Catch::StringMaker` specializations first and `operator<<` overloads second.
* Removed legacy `SCOPED_MSG` and `SCOPED_INFO` macros
* Output into debugger is now colourized
*`*_THROWS_AS(expr, exception_type)` now unconditionally appends `const&` to the exception type.
*`CATCH_CONFIG_FAST_COMPILE` now affects the `CHECK_` family of assertions as well as `REQUIRE_` family of assertions
* This is most noticeable in `CHECK(throws())`, which would previously report failure, properly stringify the exception and continue. Now it will report failure and stop executing current section.
## Improvements
* Reporters and Listeners can be defined in files different from the main file
* The file has to define `CATCH_CONFIG_EXTERNAL_INTERFACES` before including catch.hpp.
* Errors that happen during set up before main are now caught and properly reported once main is entered
* If you are providing your own main, you can access and use these as well.
* New assertion macros, *_THROWS_WITH(expr, exception_type, matcher) are provided
* As the arguments suggest, these allow you to assert that an expression throws desired type of exception and pass the exception to a matcher.
* JUnit reporter no longer has significantly different output for test cases with and without sections
* Most assertions now support expressions containing commas (ie `REQUIRE(foo() == std::vector<int>{1, 2, 3});`)
* Catch now contains experimental micro benchmarking support
* See `projects/SelfTest/Benchmark.tests.cpp` for examples
* The support being experiment means that it can be changed without prior notice
* Catch uses new CLI parsing library (Clara)
* Users can now easily add new command line options to the final executable
* This also leads to some changes in `Catch::Session` interface
## Fixes
## Internal changes
* The development version now uses .cpp files instead of header files containing implementation.
* This makes partial rebuilds much faster during development
* The expression decomposition layer has been rewritten
* The evaluation layer has been rewritten
* New library (TextFlow) is used for formatting text to output
* Truthy expressions are now reconstructed properly, not as booleans (#914)
* Various warnings are no longer erroneously suppressed in test files (files that include `catch.hpp`, but do not define `CATCH_CONFIG_MAIN` or `CATCH_CONFIG_RUNNER`) (#871)
* Catch no longer fails to link when main is compiled as C++, but linked against Objective-C (#855)
* Fixed incorrect gcc version detection when deciding to use `__COUNTER__` (#928)
* Previously any GCC with minor version less than 3 would be incorrectly classified as not supporting `__COUNTER__`.
* Suppressed C4996 warning caused by upcoming updated to MSVC 2017, marking `std::uncaught_exception` as deprecated. (#927)
### Improvements
* CMake integration script now incorporates debug messages and registers tests in an improved way (#911)
* Catch no longer attempts to ensure the exception type passed by user in `REQUIRE_THROWS_AS` is a constant reference.
* It was causing trouble when `REQUIRE_THROWS_AS` was used inside templated functions
* This actually reverts changes made in v1.7.2
* Catch's `Version` struct should no longer be double freed when multiple instances of Catch tests are loaded into single program (#858)
* It is now a static variable in an inline function instead of being an `extern`ed struct.
* Attempt to register invalid tag or tag alias now throws instead of calling `exit()`.
* Because this happen before entering main, it still aborts execution
* Further improvements to this are coming
*`CATCH_CONFIG_FAST_COMPILE` now speeds-up compilation of `REQUIRE*` assertions by further ~15%.
* The trade-off is disabling translation of unexpected exceptions into text.
* When Catch is compiled using C++11, `Approx` is now constructible with anything that can be explicitly converted to `double`.
* Captured messages are now printed on unexpected exceptions
### Fixes:
* Clang's `-Wexit-time-destructors` should be suppressed for Catch's internals
* GCC's `-Wparentheses` is now suppressed for all TU's that include `catch.hpp`.
* This is functionally a revert of changes made in 1.8.0, where we tried using `_Pragma` based suppression. This should have kept the suppression local to Catch's assertions, but bugs in GCC's handling of `_Pragma`s in C++ mode meant that it did not always work.
* You can now tell Catch to use C++11-based check when checking whether a type can be streamed to output.
* This fixes cases when an unstreamable type has streamable private base (#877)
* [Details can be found in documentation](configuration.md#catch_config_cpp11_stream_insertable_check)
* Listeners provide a way to hook into events generated by running your tests, including start and end of run, every test case, every section and every assertion.
### Fixes:
* Catch no longer attempts to reconstruct expression that led to a fatal error (#810)
* This fixes possible signal/SEH loop when processing expressions, where the signal was triggered by expression decomposition.
* Fixed (C4265) missing virtual destructor warning in Matchers (#844)
*`std::string`s are now taken by `const&` everywhere (#842).
* Previously some places were taking them by-value.
* Catch should no longer change errno (#835).
* This was caused by libstdc++ bug that we now work around.
* Catch now provides `FAIL_CHECK( ... )` macro (#765).
* Same as `FAIL( ... )`, but does not abort the test.
* Functions like `fabs`, `tolower`, `memset`, `isalnum` are now used with `std::` qualification (#543).
* Clara no longer assumes first argument (binary name) is always present (#729)
* If it is missing, empty string is used as default.
* Clara no longer reads 1 character past argument string (#830)
* Moved CMakeLists.txt to root, made it friendlier for CLion and generating XCode and VS projects, and removed the manually maintained XCode and VS projects.
