Update metdata for June 2020 release (#4010)
Update metdata for June 2020 release (#4010)


rachel-fenichel/blockly,rachel-fenichel/blockly,mark-friedman/blockly,google/blockly,google/blockly,mark-friedman/blockly,mark-friedman/blockly,rachel-fenichel/blockly,mark-friedman/blockly,google/blockly,google/blockly,rachel-fenichel/blockly,mark-friedman/blockly,rachel-fenichel/blockly,google/blockly,rachel-fenichel/blockly,google/blockly,google/blockly,rachel-fenichel/blockly,mark-friedman/blockly