Added FR language support (#483)

library/src/layout/table.rs

@@ -283,6 +283,7 @@ impl<T: Into<Value>> From<Celled<T>> for Value {
 impl LocalName for TableElem {
     fn local_name(&self, lang: Lang) -> &'static str {
         match lang {
+            Lang::FRENCH => "Tableau",
             Lang::CHINESE => "表",
             Lang::GERMAN => "Tabelle",
             Lang::ITALIAN => "Tabella",

library/src/math/mod.rs

@@ -267,6 +267,7 @@ impl Count for EquationElem {
 impl LocalName for EquationElem {
     fn local_name(&self, lang: Lang) -> &'static str {
         match lang {
+            Lang::FRENCH => "Équation",
             Lang::CHINESE => "等式",
             Lang::GERMAN => "Gleichung",
             Lang::ITALIAN => "Equazione",

library/src/meta/bibliography.rs

@@ -202,6 +202,7 @@ impl Show for BibliographyElem {
 impl LocalName for BibliographyElem {
     fn local_name(&self, lang: Lang) -> &'static str {
         match lang {
+            Lang::GERMAN | Lang::FRENCH => "Bibliographie",
             Lang::CHINESE => "参考文献",
             Lang::GERMAN => "Bibliographie",
             Lang::ITALIAN => "Bibliografia",

library/src/meta/figure.rs

@@ -90,7 +90,7 @@ impl LocalName for FigureElem {
             Lang::GERMAN => "Abbildung",
             Lang::ITALIAN => "Figura",
             Lang::RUSSIAN => "Рисунок",
-            Lang::ENGLISH | _ => "Figure",
+            Lang::ENGLISH | Lang::FRENCH | _ => "Figure",
         }
     }
 }

library/src/meta/heading.rs

@@ -140,6 +140,7 @@ cast_from_value! {
 impl LocalName for HeadingElem {
     fn local_name(&self, lang: Lang) -> &'static str {
         match lang {
+            Lang::FRENCH => "Chapitre",
             Lang::CHINESE => "小节",
             Lang::GERMAN => "Abschnitt",
             Lang::ITALIAN => "Sezione",

library/src/meta/outline.rs

@@ -179,6 +179,7 @@ impl Show for OutlineElem {
 impl LocalName for OutlineElem {
     fn local_name(&self, lang: Lang) -> &'static str {
         match lang {
+            Lang::FRENCH => "Table des matières",
             Lang::CHINESE => "目录",
             Lang::GERMAN => "Inhaltsverzeichnis",
             Lang::ITALIAN => "Indice",

src/doc.rs

@@ -520,6 +520,7 @@ impl Lang {
     pub const GERMAN: Self = Self(*b"de ", 2);
     pub const RUSSIAN: Self = Self(*b"ru ", 2);
     pub const ITALIAN: Self = Self(*b"it ", 2);
+    pub const FRENCH: Self = Self(*b"fr ", 2);
 
     /// Return the language code as an all lowercase string slice.
     pub fn as_str(&self) -> &str {