TEZ-1886. remove deprecation warnings for tez-ui on the console. (Prakash Ramachandran via hitesh)
TEZ-1856. Remove LocalOnFileSortedOutput, LocalMergedInput,
LocalTaskOutputFiles. (sseth)
TEZ-1878. Task-specific log level override not working in certain
conditions. (sseth)
Moved TEZ-1775 and TEZ-1878 into the 0.5.4 release section.
TEZ-1313. Setup pre-commit build to test submitted patches. (hitesh)