patch 0.7.0

Parse patches in the unified diff format
Documentation 
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Index: modified_file
===================================================================
--- modified_file	(revision 191)
+++ modified_file	(working copy)
@@ -1,5 +1,7 @@
 This is the original content.
 
-This should be updated.
+This is now updated.
 
+This is a new line.
+
 This will stay.
\ No newline at end of file
Index: removed_file
===================================================================
--- removed_file	(revision 188)
+++ removed_file	(working copy)
@@ -1,3 +0,0 @@
-This content shouldn't be here.
-
-This file will be removed.
\ No newline at end of file
Index: added_file
===================================================================
--- added_file	(revision 0)
+++ added_file	(revision 0)
@@ -0,0 +1,4 @@
+This was missing!
+Adding it now.
+
+Only for testing purposes.
\ No newline at end of file