Unity DOTS Life Tutorial entities 0.4.0 #3 CommandBuffers, Tags & [UpdateAfter()]: update Ent 0.8.0

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This tutorial covers using CommandBuffers, Tags and WithAll() to reduce the number of entities processed in some steps. Also using [UpdateAfter()] and [UpdateInGroup()] to set the systems updating order.

Build tested on entities 0.4.0 preview.10 . Checked against 2019.3.5f1 & Entities 0.8.0 Preview.8 on March 13, 2020. Packages used are shown here Note: DOTS Platforms is not the latest. it is only 0.2.1 preview 4 because Entities 0.8.0 does not compile with 0.2.2

The source is at https://github.com/ryuuguu/Unity-ECS-Life.git …