Fix #462 - Configurable head limit.
Merge pull request #526 from bennidhamma/master

Fix #462 - Configurable head limit.
always use absolute file path when comparing buffers names
integrate changesPlugin for displaying hunks
Merge pull request #531 from chrisbra/add_changes_plugin

integrate changesPlugin for displaying hunks
Merge pull request #527 from zdm/master

Always use absolute file path when comparing buffers names