Remove uses of std::endl, which imply a flush
Make `def` more efficient, fix to_string(string)
Add fun_call_performance samples
Merge branch 'performance_evaluations' into performance_test
Speed up print functions
Merge branch 'develop' into performance_test
Clean up compiler warnings
Merge remote-tracking branch 'origin/develop' into performance_test
Merge pull request #151 from ChaiScript/performance_test

Performance test