v8pp

• fix CI run
• Call NewDefaultAllocator() for v8::Isolate::CreateParams field (#198)

• C++17 required
• explicit binding methods: var, function, const_
• more standard types support: std::tuple, std::variant
• fix tests for the recent V8 versions

• C++14 required
• CMake support: #138
• GitHub Actions for CI pipeline: #171, #173
• Generic converters for containers, strings, tuples: #148, #160
• Fixed issues: #133, #136, #159, #162, #166, #175, #176, #177

• Bug fixes and improvements: #105, #106, #110, #113, #116, #117, #123, #131
• V8 versions 7.x support, updated examples, docs
• Visual C++ 2019 support

Updated minimum requirements to the project:

• C++ toolset:
  • Microsoft Visual C++ 2015/2017 (Windows 10)
  • GCC 5.4.0 (Ubuntu 16.04)
  • Clang 5.0.0 (Ubuntu 16.04)
• V8 version: >= 6.3
• Node.js version >= 8.0

Fixed issues: #80, #84, #88, #91