0.9.0

• Improved documentation for aoosp_adcled.ino, aoosp_adcpot.ino,
  aoosp_cluster.ino, aoosp_sync.ino, and aoosp_otp.ino.
• aoosp_exec_otpdump() now dumps fields in table format (when passing AOOSP_OTPDUMP_CUSTOMER_FIELDS);
  old format retained via AOOSP_OTPDUMP_CUSTOMER_FIELDSLIST; updated examples and doc.
• aoosp_exec_otpdump() now includes the EVK fields (at address 0x1F).
• Added aoosp_exec_skipchns_get() and aoosp_exec_skipchns_set().
• Added example aoosp_i2c12.ino (12 bits I2C).
• Added support for 12 bit I2C: aoosp_send_i2cread12(), aoosp_send_i2cwrite12(),
  and macros aoosp_exec_i2cread12(), aoosp_exec_i2cwrite12().
• Improved comments in aoosp_send.cpp/h.
• Added link to examples.