RC3 for 1.4.1 release

This is the third release candidate for the 1.4.1 release with various bugfixes and stability improvements. There are still a number of changes / fixes to come into 1.4.1:
https://github.com/PX4/Firmware/milestone/12

Second release candidate for 1.4.1 release

This introduces a fix for the MAVLink stream rate handling which increases the telemetry bandwidth significantly for all links.

v1.3.4 Release

This is a maintenance release with stability improvements.

First release candidate for 1.4.1 release

This release introduces proper version control in lockstep with QGroundControl to ensure that users get critical bugfixes.

v1.4.0 Release Candidate 4

This release candidate fixes the version reporting and defaults battery params to unconfigured.

v1.4.0 Release Candidate 3

This RC introduces improvements to the LPE estimator and switches fixed wing setups to EKF2. It will need significant testing.

v1.4.0 Release Candidate 2

This fixes an issue with the EKF1 estimator leading to excessive param updates.

v1.4.0 Release Candidate 1

This is a first early release candidate for v1.4.0

v1.4 Beta Release

v1.4 beta release

v1.3.3 Release

This is a maintenance release including a number of bugfixes that were back ported from master to stable.