Update to yaml 0.7.0

[hodoulp]

Following the fix for vcpkg (#1449), I found that vcpkg compiles OpenColorIO 2.0.1 against yaml 0.7.0. That's the latest version of yaml, and we never validated that combination.

For 2.1.x we should think about updating yaml.

For 2.0.x I suggest to also update yaml. To be discussed at the TSC meeting i.e. what is the policy for the mandatory third-party library update (those not part of the VFX Reference platform)?

Links:
https://github.com/jbeder/yaml-cpp/releases/tag/yaml-cpp-0.7.0
jbeder/yaml-cpp@yaml-cpp-0.6.3...yaml-cpp-0.7.0

[hodoulp]

Note: Have a look to #1451 to improve/fix it.

[riots100]

I am also getting an exception when trying to run OCIO v2.0.1 installed via VCPKG. The exception is happening in both YAML-cpp 0.7.0 and 0.6.3
Stack Trace:
1 OpenColorIO_2_0.dll!std::_Ptr_baseYAML::detail::node_ref::get() <-- CRASH HERE
2 OpenColorIO_2_0.dll!std::shared_ptrYAML::detail::node_ref::operatorYAML::detail::node_ref,0()
3 OpenColorIO_2_0.dll!YAML::detail::node::get<char [21]>(const char[21] & key, std::shared_ptrYAML::detail::memory_holder pMemory)
4 OpenColorIO_2_0.dll!YAML::Node::operator[]<char [21]>(const char[21] & key)
5 OpenColorIO_2_0.dll!OpenColorIO_v2_0::`anonymous namespace'::load(const YAML::Node & node, std::shared_ptr<OpenColorIO_v2_0::Config> & config, const char * filename)
6 OpenColorIO_2_0.dll!OpenColorIO_v2_0::OCIOYaml::Read(std::basic_istream<char,std::char_traits> & istream, std::shared_ptr<OpenColorIO_v2_0::Config> & config, const char * filename)
7 OpenColorIO_2_0.dll!OpenColorIO_v2_0::Config::Impl::Read(std::basic_istream<char,std::char_traits> & istream, const char * filename)
8 OpenColorIO_2_0.dll!OpenColorIO_v2_0::Config::CreateFromStream(std::basic_istream<char,std::char_traits> & istream)
9 OpenColorIO_2_0.dll!OpenColorIO_v2_0::Config::CreateRaw()

[remia]

Trying yaml 0.7.0 on mac OS 11.5.2, master branch, I didn't hit any major issues. Fixes have to be made on the unit test suite related to multi-lines comment fields no longer having spaces on empty lines, but that's pretty much it.

[riots100]

Trying yaml 0.7.0 on mac OS 11.5.2, master branch, I didn't hit any major issues. Fixes have to be made on the unit test suite related to multi-lines comment fields no longer having spaces on empty lines, but that's pretty much it.

I didn't have this issue on OSX with the same code base. Only issue is on Windows 10.

[remia]

@riots100 Do you have anything new on this error ? If not, can you give more details on how to reproduce it ? Thanks.

[hodoulp]

merged in main.