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 BNC VERSION 2.12.17 (20.04.2021)
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   ADDED     (11.03.2021): One more line with satellite health flags for the
                           GLONASS navigation messag as defiend in RINEX v. 3.05
   FIXED     (25.03.2021): Bug in SSR GLONASS upload
   FIXED     (17.03.2021): Redundant output concerning unhealthy satellites

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 BNC VERSION 2.12.16 (25.02.2021)
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   FIXED     (18.12.2020): Bug in IRNSS ephemeris encoding / decoding
   FIXED     (10.12.2020): Bug in RTCM3coDecoder regrading SSR format consideration
   FIXED     (04.12.2020): Bug regarding consideration of incomming ephemerides
   FIXED     (04.12.2020): Small bugfix regarding latency check
   FIXED     (01.12.2020): relativistic effects are adapted with respect
                           to the respective GNSS ICD
   FIXED     (25.11.2020): Small bugfix regarding the generation of combined
                           SSR orbit and clock messages
   FIXED     (24.11.2020): Bugfixes within ephemeris check
   CHANGED   (12.11.2020): a priori coordinates within examples are updated
   CHANGED   (23.11.2020): changes to prevent erroneous ephemeris data sets
                           from usage in combination
   CHANGED   (25.11.2020): Small format adaptations regarding latency check
   CHANGED   (26.11.2020): Range of MSM messages enlarged to 1237
   CHANGED   (10.11.2020): PPP map now with OSM only
   ADDED     (11.11.2020): Check to prevent the same eph data sets with different
                           TOC values
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 BNC VERSION 2.12.15 (10.11.2020)
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   FIXED     (03.11.2020):  cleanup of the example configurations
   ADDED     (31.10.2020):  ephemeris checks and related debugging output
   ADDED     (22.10.2020):  check if orbit and clock corrections are out of range
   FIXED     (29.09.2020):  small bugfixes regading long mountpoint names
                            in latency check and latency plots,
   FIXED     (29.09.2020):  debug output deleted
   FIXED     (29.09.2020):  bug in clock rinex header line
   CHANGED   (21.09.2020):  cleanup of the relativistic effects w.r.t. IGS-SSR

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 BNC VERSION 2.12.14 (04.09.2020)
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    CHANGED  (02.09.2020):  feed engine output format,
                            Lock Time Indicator is replaced by Cycle Slip Counter
    ADDED    (27.08.2020):  encoding and decoding of IGS-SSR messages
    ADDED    (24.07.2020):  B2b/7D BDS in signal mapping for MSM
    CHANGED  (24.07.2020):  IRNSS experimental in official ephemeris message number

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 BNC VERSION 2.12.13 (09.06.2020)
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    CHANGED  (08.06.2020):  BDS SSR IOD is changed from WTZR00DEU_U_20203430000_01D_01S.ppp24 into  8 bit with respect
                            to RTCM SSR proposal version 08
    CHANGED  (08.06.2020):  BDS and QZSS SSR signal and tracking mode is adapted
                            with respect to RTCM SSR proposal version 08
    FIXED    (30.04.2020):  QZSS fit Interval is specified as flag in RINEX 3.04

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 BNC VERSION 2.12.12 (21.01.2020)
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    ADDED     (21.11.2019): GPS and QZSS fit Interval in hours
    CHAGED    (20.11.2019): Epehmeris check

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 BNC VERSION 2.12.11 (08.11.2019)
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    CHANGED   (08.11.2019): Harmonization of RTCM3 Signal ID Mapping and
                            RTCM SSR Signal and Tracking Mode Identifiers
                            for BDS and QZSS

--------------------------------------------------------------------------------
 BNC VERSION 2.12.10 (02.10.2019)
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    ADDED     (23.09.2019): IRNSS ephemeris support in RTCM3 Encoder
    ADDED     (20.09.2019): IRNSS MSM and ephemeris support in RTCM3 Decoder
    CHANGED   (20.09.2019): RTCM signal mapping IDs for GLONASS
    CHANGED   (01.10.2019): RTCM signal mapping IDs for BDS
                            Basis: RTCM BDSWG proposal from 9/2019 as far as
                            consistent with RINEX version 3.04
    CHANGED   (20.09.2019): up to 64 BDS prn codes are supported now
    FIXED     (20.09.2019): multiple message indicator in SSR messages
    FIXED     (20.09.2019): GLONASS message frame time written into RINEX files

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 BNC VERSION 2.12.9 (20.05.2019)
--------------------------------------------------------------------------------
    FIXED   (17.05.2019): method to read the RTNET data buffer
    FIXED   (10.05.2019): typo in rtnet2ssr transition for ssr upload
    CHANGED (13.05.2019): number of possible phase biases for ssr upload
                          are enlaged to 100
    CHANGED (13.05.2019): default observation types for Galileo
    CHANGED (10.05.2019): missing phase biases are added within
                          rtnet2ssr transition for ssr upload

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 BNC VERSION 2.12.8 (06.05.2019)
--------------------------------------------------------------------------------
    CHANGED (06.05.2019): small but fine changes within the latency checker
    CHANGED (03.05.2019): Transformation parameters from ITRF2014 into DFREF91
    CHANGED (30.04.2019): Transformation parameters from ITRF2014 into ETRF2000
    CHANGED (26.04.2019): GLONASS ephemerides validity is now up to 2 hours.
                          After that, they will be marked as outdated.
    CHANGED (10.04.2019): Check with respect to wrong observation epochs
    FIXED   (29.04.2019): Bug with respect to GLONASS upload
    FIXED   (26.04.2019): Small Bug in NMEA output

--------------------------------------------------------------------------------
 BNC VERSION 2.12.7 (03.04.2019)
--------------------------------------------------------------------------------
    ADDED   (21.03.2019): Updates regarding RINEX Version 3.04
    ADDED   (28.02.2019): Lock time in seconds as an optional feed engine output
    ADDED   (27.09.2018): Possibility to request a user and password
                          detected sourcetable
    ADDED   (19.09.2018): Two more polynomial coefficients of the SSR clock correction
                          message and one more parameter to decribe the SSR URA
    ADDED   (11.12.2017): Decoding of receiver descriptor in MT 1033
    ADDED   (27.11.2017): Satellite health check
    ADDED   (26.10.2017): IRNSS support in RINEX QC
    CHANGED (06.07.2018): Parameters for transformation of orbit and clock corrections
                          from ITRF 2014 into ETRF2000 and DREF 91,
                          no updated parameters for NDA83 available, hence deleted
    CHANGED (28.06.2018): Allow 10 Hz observation data processing and re-sampling
                          harmonization of BNCs re-sampling applications
    CHANGED (23.03.2018): SSR SBAS and BDS satellite IDs with respect to the proposal
    CHANGED (28.09.2017): Transformation of orbit and clock corrections into ETRF2000,
                          NDA83 or DREF91 is done temporarily via ITRF2008
    FIXED   (29.03.2019): Bug in NMEA checksum
    FIXED   (25.03.2019): Bug in RINEX file concatention
    FIXED   (05.09.2018): Bug in RTCM3 ephemeris message for QZSS
    FIXED   (29.08.2018): Bug in RTCM3 ephemeris message for BDS and SBAS
    FIXED   (28.06.2018): RINEX version 3 filenames for re-sampled files
    FIXED   (11.06.2018): Bug in reqc ephemeris check
    FIXED   (18.05.2018): Bug in RINEX file concatenation
    FIXED   (18.05.2018): Bug in ephemeris upload
    FIXED   (29.03.2018): Bug in ephemeris check
    FIXED   (05.02.2018): Bug in latency check
    FIXED   (13.12.2017): Galileo geocentric gravitational constant is corrected
    FIXED   (17.11.2017): Encoding/decoding of all missing parameters in MT 1020
    FIXED   (23.10.2017): Bug in RTCM3 MSM Decoder
--------------------------------------------------------------------------------
 BNC VERSION 2.12.6 (26.09.2017)
--------------------------------------------------------------------------------
    FIXED   (25.09.2017): GPS SSR Orbit IOD has to be GPS IODE, not IODC
--------------------------------------------------------------------------------
 BNC VERSION 2.12.5 (30.08.2017)
--------------------------------------------------------------------------------
    CHANGED (29.08.2017): RTCM message number for BDS is updated
--------------------------------------------------------------------------------
 BNC VERSION 2.12.4 (10.04.2017)
--------------------------------------------------------------------------------
    CHANGED (15.02.2017): SIRGAS2000 transformation parameters adjusted to IGb14
    CHANGED (10.04.2017): Transformation parameters for ITRF2005 to GDA94 removed
    CHANGED (10.04.2017): Transformation parameters for ITRF2008 to SIRGAS95 removed
    CHANGED (10.04.2017): Transformation parameters for ITRF2014 to GDA2020 added
    FIXED   (10.04.2017): Minor bugs to prevent some irregular crashes of BNC
--------------------------------------------------------------------------------
 BNC VERSION 2.12.3 (05.09.2016)
--------------------------------------------------------------------------------
    ADDED   (01.09.2016): Number of allowed SSR biases is enlarged, some future
                          GLONASS signal and tracking mode identifier are added
    ADDED   (08.08.2016): Some informations about the data source is added as
                          comment within the header of RINEX navigation files
    ADDED   (21.07.2016): Frequency specific signal priorities are added for
                          RINEX version 3 to RINEX version 2 conversion
    ADDED   (29.06.2016): Consideration of provioder ID changes in SSR streams
                          during PPP analysis
    CHANGED (28.07.2016): Small adaptations in qwtpolar sources to allow a
                          successful comilation of BNC on a Rasperry Pi
    CHANGED (21.07.2016): Default signal priority list
    CHANGED (08.06.2016): Weighting factor for GLONASS phase observations
                          is now enlarged
    CHANGED (27.05.2016): RINEX 2.11 ephemeris output for an unknown
                          transmission time is set to 0.000000000000e+00
    CHANGED (24.05.2016): The real satellite visibility is considered, if the
                          expected observations are computed in RINEX QC
    FIXED   (12.08.2016): Check regarding wrong observation epochs is done during
                          latency check as well to prevent erroneous latencies
    FIXED   (08.06.2016): Map generation from sourcetable entry
    FIXED   (02.06.2016): the approach how to wait for clock corrections
                          in PPP mode, which was well proven in BNC verson 2.11
                          is re-implemented
    FIXED   (30.05.2016): Some NMEA components in PPP output are fixed:
                          time stamp is now UTC, hDop value instead pDop value

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 BNC VERSION 2.12.2 (18.05.2016)
--------------------------------------------------------------------------------
    ADDED   (18.05.2013): Expected observations in RINEX QC
    ADDED   (12.05.2016): Limits for spherical harmonics/degree order extended
    FIXED   (12.05.2016): Wrong RINEX v2 header line excluded

--------------------------------------------------------------------------------
 BNC VERSION 2.12.1 (21.04.2016)
--------------------------------------------------------------------------------
    FIXED   (21.04.2016): RINEX v2 file naming for observation files
    CHANGED (21.04.2016): Release number is now part of BNC version

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 BNC VERSION 2.12.0 (19.04.2016)
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