g3doc/change_logs.md

# Change logs

*   June 7th, 2021: Add hungarian matching support on TPU for MaX-DeepLab. Our
    TF2 version is based on Jiquan Ngiam's original Lingvo tensorflow
    implementation and Amil Merchant's TF1 version modifications.
*   June 1st, 2021: "Hello, World!", DeepLab2 made publicly available.