maintenance release v4.2.1

- fix elf PT_LOAD type in lpc21iap LPC USB download
- fix electrical.current estimate in sim
- fix LPC+xbee_api in rotorcraft
- fix conversion of vsupply to decivolts if offset is used
- more robust dfu flash script, only upload to Lisa/M

release version v4.2.0_stable

Second release candidate for next stable release v4.2.

- Run AP and FBW on separate boards
- Separate Board Files for yapa_v2.0
- Add UART hardware flow control (for STM32 only)
- Add ezosd current sensor module
- Paparazzi Center: fix coloration by passing input buffer line by line, set language to english
- Rate limiter bugfix
- DC_SHOT message photo numbers shown in GCS
- home mode height can be set different from security height
- Ahrs float_dcm uses magnetic heading while not inflight for better initial guess
- Outback Challenge "Safety" Rules 1 and 2
- Added WMM2010 Geo model used in ahrs int_cmpl_quat for rotorcrafts
- Fix missing gain definitions from airframe file in total energy control
- Added stm32loader to sw/tools
- Change vsupply to be a uint16 to enable reporting of voltages higher than 25.5V
- Digital cam module: release camera button on init
- Fix second order term in propagation of x-position in HFF

Paparazzi v4.9 development milestone

- paparazzi#237 State interface merged

Paparazzi 4.1.0_testing

First release candidate for next stable release.

- Total energy control
- PPM input on UART1 RX for Lisa/M autopilots
- Rate Limiter for Flaps, Gears and servo hatches
- GPS acceleration compensation in ahrs_float_dcm
- Improved gravity heuristic for int_cmpl_quat
- Some updates on digital_cam and photogrammetry modules
- Replace wget by OCaml Http_client from netclient lib to download files

maintenance release v4.0.3_stable

maintenance release v4.0.2_stable

maintenance release fixing some bugs

release Paparazzi 4.0 stable version

tagging as unstable to get a proper paparazzi_version