Update CHANGES.txt (Move TEZ-1687,TEZ-1737,TEZ-1772 from 0.5.3 to 0.6 (zjffdu)
Update CHANGES.txt (Move TEZ-1687,TEZ-1737,TEZ-1772 from 0.5.3 to 0.6 (zjffdu)

guiling/tez,apache/tez,dongjiaqiang/tez,apache/tez,apache/tez,Altiscale/tez,bernhardschaefer/tez,ueshin/apache-tez,dongjiaqiang/tez,Altiscale/tez,sidseth/tez,amirsojoodi/tez,zjffdu/tez,ChetnaChaudhari/tez,guiling/tez,sequenceiq/tez,ueshin/apache-tez,apache/tez,ChetnaChaudhari/tez,zjffdu/tez,Parth-Brahmbhatt/tez,jth/tez,navis/tez,sidseth/tez,bernhardschaefer/tez,navis/tez,amirsojoodi/tez,sidseth/tez,amirsojoodi/tez,amirsojoodi/tez,ueshin/apache-tez,Parth-Brahmbhatt/tez,dongjiaqiang/tez,bernhardschaefer/tez,ueshin/apache-tez,sidseth/tez,Parth-Brahmbhatt/tez,navis/tez,guiling/tez,zjffdu/tez,jth/tez,zjffdu/tez,apache/tez,sidseth/tez,jth/tez,guiling/tez,ChetnaChaudhari/tez,ueshin/apache-tez,Parth-Brahmbhatt/tez,ChetnaChaudhari/tez,amirsojoodi/tez,dongjiaqiang/tez,jth/tez,Parth-Brahmbhatt/tez,sequenceiq/tez,jth/tez,bernhardschaefer/tez,zjffdu/tez,Altiscale/tez,guiling/tez,dongjiaqiang/tez,ChetnaChaudhari/tez,sequenceiq/tez,navis/tez,navis/tez,bernhardschaefer/tez,Altiscale/tez