Add BeiDou as supported by RINEXv2.. (#360)

* Add BeiDou as supported by RINEXv2
* bump v0.18.1

---------

Signed-off-by: Guillaume W. Bres <guillaume.bressaix@gmail.com>

Author: gwbres

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rinex"
-version = "0.18.0"
+version = "0.18.1"
 license = "MPL-2.0"
 authors = ["Guillaume W. Bres <guillaume.bressaix@gmail.com>"]
 description = "RINEX file parsing, analysis and production"

src/header/parsing.rs

@@ -1074,13 +1074,14 @@ impl Header {
     ) {
         lazy_static! {
             /*
-             *  Only GPS, Glonass, Galileo and SBAS are supported in V2 RINEX
+             *  We support GPS, Glonass, Galileo, SBAS and BDS as per v2.11.
              */
-            static ref KNOWN_V2_CONSTELLS: [Constellation; 4] = [
+            static ref KNOWN_V2_CONSTELLS: [Constellation; 5] = [
                 Constellation::GPS,
                 Constellation::SBAS,
                 Constellation::Glonass,
                 Constellation::Galileo,
+                Constellation::BeiDou,
             ];
         }
         let line = line.split_at(6).1;