* areas relevant to making older projects compatible with the API changes of each new release.
*
* \section Sec_MigrationXXXXXX Migrating from 120219 to XXXXXX
+ * <b>Device Mode</b>
+ * - The device mode Audio Class driver now requires an additional configuration parameter, the Audio Control interface index. Existing applications should
+ * be adjusted to specify the additional configuration parameter.
+ * - The HID_DESCRIPTOR_JOYSTICK() macro no longer takes a variable number of axis as a parameter, due to OS incompatibilities; this macro now uses a fixed
+ * 3 axis of data. User applications should update their calls to this macro and their report structures to suit a fixed 3-axis joystick report. If a user
+ * application requires more than 3 axis' of data, a custom report descriptor will need to be constructed by hand.
+ *
* <b>Host Mode</b>
* - The Android Accessory Host class driver property strings are now a array of \c char* rather than a struct of named pointers. Existing applications
* should use C99 Designated Initializers with the property string indexes located in \ref AOA_Strings_t instead.