Merge branch 'master' of https://github.com/DataSketches/sketches-pig.git
diff --git a/.gitignore b/.gitignore
index be2fcec..f2a34de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,7 +12,8 @@
 
 #Test output
 test-output/
-/.clover/
+.clover/
+tmp/
 
 # Build artifacts
 target/
@@ -24,6 +25,7 @@
 .idea
 *.iml
 *.properties
+*.releaseBackup
 
 # Jekyll
 Gemfile
@@ -31,3 +33,4 @@
 _site/
 _*
 _*/
+