Add MRU1 datagram parser for .raw files

[kjetilhh]

There is a MRU0 parser in this branch. There should be a MRU1 parser as well.

`
struct StructKMBinarySensorDatagram {
                                        StructDatagramHeader    DgHeader;                                         char    StartId[4];
                                        UINT16    DgmLength;
                                        UINT16    DgmVersion;                                         UINT32    UTCSeconds;
                                        UINT32    UTCNanoSeconds;
                                        UINT32    Status;                                         double    Latitude;
                                        double    Longitude;
                                        float    EllipsoidHeight;                                         float    Roll;
                                        float    Pitch;
                                        float    Heading;
                                        float     Heave;                                         float    RollRate;
                                        float    PitchRate;
                                        float    YawRate;                                         float    NorthVelocity;
                                        float    EastVelocity;
                                        float    DownVelocity;                                         float    LatitudeError;
                                        float    LongitudeError;
                                        float    HeightError;
                                        float    RollError;
                                        float    PitchError;
                                        float    HeadingError;
                                        float    HeaveError;                                         float    NorthAcceleration;
                                        float    EastAcceleration;
                                        float    DownAcceleration;                                         //Delayed heave :
                                        UINT32    DelayedHeaveUTCSeconds;
                                        UINT32    DelayedHeaveUTCNanoseconds;
                                        float    DelayedHeave;
    };

    public struct StructDatagramHeader {    
                                    long        lDatagramType;
                                    FILETIME    ftTime;
                                };

`

pyEcholab/echolab2/instruments/util/simrad_parsers.py

Line 551 in 40aa1fe

class SimradMRUParser(_SimradDatagramParser):

[tollefroesteen]

http://www3.mbari.org/products/mbsystem/formatdoc/KongsbergKmall/EMdgmFormat_RevH/html/kmBinary.html

[oyvinol]

For now I pushed the needed changes to a fork here: oyvinol#1