ENH: rewriting ThreadPool and enabling it by default
ENH: support VCPKG
ENH: adding an example and improving tests
DOC: recommend using separate instances
BUG: Manually set seed for ParticleSwarmOptimzerTest
BUG: fixing wrong check for argument count
STYLE: Simplify code by using TestingMacros
DOC: Make it more explicit that 'push' authoriz...