0.5.0

• Added example aoosp_ledst.ino.
• aoosp_exec_setotp() now uses new aoosp_send_settestpw_sr().
• Added telegram aoosp_send_settestpw_sr().
• Explicit errors in aoosp_otp.ino.
• Added telegrams aoosp_send_readledst() and aoosp_send_readledstchn().
• Added aoosp_prt_ledst(); all aoosp_prt now use "-" as field separator.
• Added telegram aoosp_send_godeepsleep().
• Added example aoosp_tinfo explaining serial cast (with ASKTINFO).
• Added telegrams aoosp_con_asktinfo() and variant aoosp_con_asktinfo_init().
• Added API documentation for aoosp_loglevel_set() and aoosp_loglevel_get().
• Removed old datasheet names for telegrams (in aoosp_send.cpp).