Add 'shf/' from commit 'b6c5a95b664aeb861d7b33ffc9eefe447ba99dd7'

git-subtree-dir: shf
git-subtree-mainline: 401408448f
git-subtree-split: b6c5a95b66

shf/shf-rgfw.mlb

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+$(SML_LIB)/basis/basis.mlb
+
+fcore.mlb
+
+(* IMPERATIVE SHELL *)
+$(SML_LIB)/basis/mlton.mlb
+ann
+  "allowFFI true"
+in
+  ffi/gles3-import.sml
+  ffi/rgfw-import.sml
+end
+
+ann
+  "allowVectorExps true"
+in
+  shell/make-mailbox.sml
+end
+
+shell/input-mailbox.sml
+shell/draw-mailbox.sml
+
+shell/exception-logger.sml
+shell/updater.sml
+shell/gl-shaders.sml
+shell/gl-draw.sml
+shell/rgfw-loop.sml