diff --git a/flips.rc b/flips.rc
index 3012271..c4492f6 100644
--- a/flips.rc
+++ b/flips.rc
@@ -7,8 +7,8 @@
 1 24 "flips.Manifest"
 
 VS_VERSION_INFO VERSIONINFO
-FILEVERSION    	1,3,2,0
-PRODUCTVERSION 	1,3,2,0
+FILEVERSION    	1,4,0,0
+PRODUCTVERSION 	1,4,0,0
 FILEFLAGSMASK  	VS_FFI_FILEFLAGSMASK
 FILEFLAGS      	0
 //VS_FF_DEBUG VS_FF_PATCHED VS_FF_PRERELEASE VS_FF_PRIVATEBUILD VS_FF_SPECIALBUILD  VS_FFI_FILEFLAGSMASK
@@ -22,12 +22,12 @@ BEGIN
         BEGIN
             VALUE "CompanyName",      "Alcaro"
             VALUE "FileDescription",  "Flips Patch Utility"
-            VALUE "FileVersion",      "1.3.2.0"
+            VALUE "FileVersion",      "1.4.0.0"
             VALUE "InternalName",     "Floating IPS"
-            VALUE "LegalCopyright",   "©2013-2015 Alcaro"
+            VALUE "LegalCopyright",   "©2013-2018 Alcaro"
             VALUE "OriginalFilename", "flips.exe"
             VALUE "ProductName",      "Floating IPS"
-            VALUE "ProductVersion",   "1.3.2.0"
+            VALUE "ProductVersion",   "1.4.0.0"
         END
     END
 END
diff --git a/libbps.h b/libbps.h
index 74232c2..bde6ebf 100644
--- a/libbps.h
+++ b/libbps.h
@@ -5,6 +5,7 @@
 
 #include "global.h"
 #include <stdint.h>
+#include <string.h>
 
 #ifndef __cplusplus
 #include <stdbool.h>//bool; if this file does not exist (hi msvc), remove it and uncomment the following three lines.
@@ -59,6 +60,29 @@ enum bpserror bps_create_delta(file* source, file* target, struct mem metadata,
                                bool (*progress)(void* userdata, size_t done, size_t total), void* userdata,
                                bool moremem);
 
+//Like the above, but takes struct mem rather than file*. Better use the above if possible, the
+//  creator takes 5*(source+target) in addition to whatever the source/target arguments need.
+inline enum bpserror bps_create_delta_inmem(struct mem source, struct mem target, struct mem metadata, struct mem * patch,
+                               bool (*progress)(void* userdata, size_t done, size_t total), void* userdata,
+                               bool moremem)
+{
+	class memfile : public file {
+	public:
+		const uint8_t * m_ptr;
+		size_t m_len;
+		
+		size_t len() { return m_len; }
+		bool read(uint8_t* target, size_t start, size_t len) { memcpy(target, m_ptr+start, len); return true; }
+		
+		memfile(const uint8_t * ptr, size_t len) : m_ptr(ptr), m_len(len) {}
+	};
+	
+	memfile sourcef(source.ptr, source.len);
+	memfile targetf(target.ptr, target.len);
+	
+	return bps_create_delta(&sourcef, &targetf, metadata, patch, progress, userdata, moremem);
+}
+
 //Frees the memory returned in the output parameters of the above. Do not call it twice on the same
 //  input, nor on anything you got from anywhere else. bps_free is guaranteed to be equivalent to
 //  calling stdlib.h's free() on mem.ptr.