Add file glob function
Add file glob
Add file(glob), dir(glob) and open(File) to manage files
Moved in-memory framework to silk-framework
Moved HashJoinOp to silk-framework:xerial.silk.ext package
Import the latest develop branch and fix conflicts
Integrate changes in the develop branch
fix merge conflicts
Merge develop
CallGraph is now a standard class
Add List files/dir operation impl
Store command execution result to a file
Add Sink type to store intermediate results
Add example
Ignore attlassian plugin xml
upgrade sbt-pack plugin