Updated DSP_Lig change log.
/**
\page ChangeLog_pg Change Log
+<hr>
+<b>Version 1.5.0</b>
+
+Modified arm_math.h
+- removed macro TABLE_SIZE.
+- changed preprocessor conditions to select functions instead of SIMD instruction for Cortex-M3.
+
+Modified arm_const_structs.c
+- Added structure instances for the RFFT functions (equivalent to CFFT structures).
+
<hr>
<b>Version 1.4.10 (no source code change [still labeled 1.4.5])</b>
