Phaser v4.0.0 Beta 2

• Better roundPixels handling via bias.
• UUIDs for DynamicTexture names.
  • Masks work (again). Big feature!
• DynamicTexture can resize immediately after creation.
• Fix shader compilation issues on diverse systems.
  * Shapes/Graphics should work again in Firefox.
  * Issues with inTexDatum should be eliminated in affected Linux systems.
• Fix Extern and extend its rendering potential (see Beam Examples).
• TileSprite now assigns default dimensions to each dimension separately.
• BaseFilterShader now accesses loaded shader cache keys correctly.