Natron 2.5.1 pre1

What's Changed

• Update year in copyright comments by @BronyDust in #857
• Fix for compilers that use C++17 by default. by @acolwell in #865
• Fix pthread related build busters in glog code. by @acolwell in #866
• Clear current GLX context before destroying the current context by @jix in #867
• Fix OpenGL support handling for plugins with dynamic GL support. by @acolwell in #869

New Contributors

• @BronyDust made their first contribution in #857
• @acolwell made their first contribution in #865
• @jix made their first contribution in #867

Full Changelog: v2.5.0...v2.5.1-pre1