To avoid having to change the API in an incompatible way,
a arm_mat_mult_opt_q31 was introduced and is providing a faster implementation
to use with Helium (but requiring more storage for intermediate results).
Some improvements to tests for matrix functions added.
- new version V1.5.5
- reworked DSP library source files
added macro ARM_MATH_LOOPUNROLL
removed macro UNALIGNED_SUPPORT_DISABLE
relpaced arm_bitreversal2.S with C version
added const-correctness
replaced SIMD pointer construct with memcpy solution
- reworked DSP library documentation
- moved DSP libraries to folder ./DSP/Lib
- ARM DSP Libraries are built with ARMCLANG
- Added DSP Libraries Source variant