improve exception documentation
improve state_view default handlers
add SAFE_PROPAGATION defines for compiling C++ as Lua
add examples for automatic operator registrations and as_container
fix tutorial code
change tests to not throw unless absolutely necessary
provide synchronization for file writing in tests
provide thread safety around thread tests for REQUIRE
add ostream automatic support
change 5.1 compat to only kick in luaL_loadbufferx and luaL_loadfilex when LuaJIT is version 2.0.1 and lower
From the Catch docs:
Please note that the THROW family of assertions expects to be passed a single
expression, not a statement or series of statements. If you want to check a
more complicated sequence of operations, you can use a C++11 lambda function.
https://github.com/philsquared/Catch/blob/master/docs/assertions.md
In current versions of Catch violating this causes a build error.
