selection clicks, shift+arrow keys, fast(er) redraw, key mask in config.h (thx Magnus Leuthner)

st.info

@@ -49,6 +49,10 @@ st| simpleterm,
 	kcud1=\E[B,
 	kcuf1=\E[C,
 	kcuu1=\E[A,
+	kLFT=\E[d,
+	kRIT=\E[c,
+	kind=\E[a,
+	kri=\E[b,
 	kdch1=\E[3~,
 	kich1=\E[2~,
 	kend=\E[4~,