Set sequence number in msg_heartbeat, which is sent to drone
Add correct .gitignore
Revert "Set sequence number in msg_heartbeat, which is sent to drone"

This reverts commit c01bc339e16f41c382e4c9b64ddbdf58eee4c6e8.
Merge branch 'master' into fix-mavlink-message-sequence-number
Fix sequence number for all MAVLink packets
Merge pull request #956 from alextel69/fix-mavlink-message-sequence-number

Set sequence number in msg_heartbeat, which is sent to drone