Entitas 0.39.0

See and discuss changes in Milestone 0.39.0

Entitas

• Added entityIndex.ToString() with name #329

Entitas.CodeGenerator

• Add contexts.Reset() (#317)
• Removed ComponentDataProvider without namespace #323
• Don't generate EntityIndex when not specified #326
• Cache static component index lookup into local var #316
• Review and check for namespace awareness #328