Add SUM reducer

Signed-off-by: Nikita 'webconn' Maslov <wkernelteam@gmail.com>
Shuffler: fix memory problems

Signed-off-by: Nikita 'webconn' Maslov <wkernelteam@gmail.com>
Add documentation

Signed-off-by: Nikita 'webconn' Maslov <wkernelteam@gmail.com>
Add Doxyfile

Signed-off-by: Nikita 'webconn' Maslov <wkernelteam@gmail.com>
Minor informational fixes

Signed-off-by: Nikita 'webconn' Maslov <wkernelteam@gmail.com>
Merge pull request #1 from webconn/large_heap

Large heap