[Release] Update CHANGELOG.md for 0.8.0
[Release] Update CHANGELOG.md for 0.8.0

Change-Id: If8489283f73f5aa8947f742958cdb4a0b5a76084

kou/arrow,icexelloss/arrow,dremio/arrow,renesugar/arrow,yufeldman/arrow,dremio/arrow,pcmoritz/arrow,itaiin/arrow,kou/arrow,icexelloss/arrow,apache/arrow,renesugar/arrow,kou/arrow,wagavulin/arrow,cpcloud/arrow,laurentgo/arrow,majetideepak/arrow,laurentgo/arrow,tebeka/arrow,renesugar/arrow,yufeldman/arrow,xhochy/arrow,cpcloud/arrow,apache/arrow,icexelloss/arrow,renesugar/arrow,cpcloud/arrow,wesm/arrow,wagavulin/arrow,dremio/arrow,apache/arrow,kou/arrow,siddharthteotia/arrow,laurentgo/arrow,yufeldman/arrow,siddharthteotia/arrow,wesm/arrow,wagavulin/arrow,apache/arrow,cpcloud/arrow,cpcloud/arrow,tebeka/arrow,cpcloud/arrow,renesugar/arrow,yufeldman/arrow,wagavulin/arrow,dremio/arrow,pcmoritz/arrow,itaiin/arrow,xhochy/arrow,kou/arrow,siddharthteotia/arrow,wesm/arrow,dremio/arrow,siddharthteotia/arrow,pcmoritz/arrow,xhochy/arrow,majetideepak/arrow,dremio/arrow,siddharthteotia/arrow,wesm/arrow,majetideepak/arrow,apache/arrow,majetideepak/arrow,kou/arrow,pcmoritz/arrow,pcmoritz/arrow,pcmoritz/arrow,icexelloss/arrow,cpcloud/arrow,wagavulin/arrow,laurentgo/arrow,wesm/arrow,wagavulin/arrow,itaiin/arrow,xhochy/arrow,tebeka/arrow,laurentgo/arrow,wesm/arrow,wesm/arrow,wesm/arrow,siddharthteotia/arrow,icexelloss/arrow,wesm/arrow,pcmoritz/arrow,itaiin/arrow,cpcloud/arrow,xhochy/arrow,pcmoritz/arrow,cpcloud/arrow,apache/arrow,yufeldman/arrow,itaiin/arrow,tebeka/arrow,majetideepak/arrow,laurentgo/arrow,laurentgo/arrow,laurentgo/arrow,wagavulin/arrow,dremio/arrow,itaiin/arrow,dremio/arrow,itaiin/arrow,itaiin/arrow,tebeka/arrow,apache/arrow,laurentgo/arrow,xhochy/arrow,renesugar/arrow,pcmoritz/arrow,wesm/arrow,itaiin/arrow,laurentgo/arrow,yufeldman/arrow,xhochy/arrow,siddharthteotia/arrow,yufeldman/arrow,cpcloud/arrow,yufeldman/arrow,kou/arrow,xhochy/arrow,tebeka/arrow,siddharthteotia/arrow,cpcloud/arrow,icexelloss/arrow,majetideepak/arrow,itaiin/arrow,renesugar/arrow,majetideepak/arrow,tebeka/arrow,dremio/arrow,renesugar/arrow,dremio/arrow,kou/arrow,xhochy/arrow,xhochy/arrow,icexelloss/arrow,laurentgo/arrow,xhochy/arrow,kou/arrow,siddharthteotia/arrow,pcmoritz/arrow,kou/arrow,cpcloud/arrow,itaiin/arrow,wagavulin/arrow,apache/arrow,majetideepak/arrow,kou/arrow,cpcloud/arrow,majetideepak/arrow,icexelloss/arrow,renesugar/arrow,renesugar/arrow,apache/arrow,pcmoritz/arrow,renesugar/arrow,wesm/arrow,wesm/arrow,majetideepak/arrow,kou/arrow,kou/arrow,renesugar/arrow,cpcloud/arrow,apache/arrow,itaiin/arrow,itaiin/arrow,renesugar/arrow,itaiin/arrow,renesugar/arrow,apache/arrow,majetideepak/arrow,icexelloss/arrow,laurentgo/arrow,yufeldman/arrow,laurentgo/arrow,icexelloss/arrow,pcmoritz/arrow,majetideepak/arrow,siddharthteotia/arrow,wagavulin/arrow,majetideepak/arrow,laurentgo/arrow,majetideepak/arrow,kou/arrow,laurentgo/arrow,tebeka/arrow,wagavulin/arrow,majetideepak/arrow,pcmoritz/arrow,yufeldman/arrow,icexelloss/arrow,wagavulin/arrow,xhochy/arrow,tebeka/arrow,icexelloss/arrow,dremio/arrow,icexelloss/arrow,tebeka/arrow,xhochy/arrow,xhochy/arrow,apache/arrow,siddharthteotia/arrow,xhochy/arrow,icexelloss/arrow,wesm/arrow,apache/arrow,wagavulin/arrow,pcmoritz/arrow,wesm/arrow,itaiin/arrow,apache/arrow,yufeldman/arrow,renesugar/arrow,pcmoritz/arrow