add use_malloc param to generate_messages; clips rather than realloc's variable-length arrays
SerialClient: add write timeout to trap certain USB-serial issues
collect failure stats for nodehandle; controlled by #ifdef NH_DIAGNOSTICS
add Nh_diag message to CMakelists
add code size report to psoc4 Makefile
remove PARAMETER_SUPPORT #ifdefs; fixed by rosserial_generate(...use_malloc=False)