Paparazzi 5.2.1_stable
======================

Maintenance release

- build system: remove 'load' target as it is a builtin directive in Make 4.0
- fix FlightGear visualization on 32bit systems
- flight plans: set primitive should not delay next stage
  [#824] (https://github.com/paparazzi/paparazzi/pull/824)
- flight plans: fix return primitive
- generators: gen_airframe: don't force float if unit = code_unit
- sys_time: up to 16 sys_time timers by default (was 8)
- OCaml: fix Pprz.sprint_value for uint32, e.g. for NatNet
  [#831] (https://github.com/paparazzi/paparazzi/issues/831)
- Rotorcraft: auto-enable UNLOCKED_HOME_MODE if HOME mode is used on RC
  [#823] (https://github.com/paparazzi/paparazzi/issues/823)
- Rotorcraft: only go to HOME mode if in NAV
  [#850] (https://github.com/paparazzi/paparazzi/issues/850)
- Fixedwing: If USE_BARO_BOARD: separate baro timer
  Before baro_periodic was running at PERIODIC_FREQUENCY in sensors_task,
  which is too fast for ms5611 if periodic freq is > 100Hz.
- INS alt_float: if USE_BARO_BOARD, dt is 1/BARO_PERIODIC_FREQUENCY
  [#848] (https://github.com/paparazzi/paparazzi/pull/848)
- STM32: backport fix for using multiple ADs
  [#822] (https://github.com/paparazzi/paparazzi/pull/822)
- LPC21: don't override T0CCR values when setting ppm and trig_ext
- IMU driver for Lisa/M/MX 2.1
  [#817] (https://github.com/paparazzi/paparazzi/pull/817)
- support for HBmini board
  [#864] (https://github.com/paparazzi/paparazzi/pull/864)