Support for multiple line continuation defs

Added support for multiple line continuation characters,
used boilerplate from delimeters, but still
doesn't show all language attributes, even though
the sql server & statik seem to be getting along
fine (even with -v on). Also adjusted `line_continuation`
settings for languages appropriately.

Author: why-does-ie-still-exist

data/Language/Bash.yaml

@@ -2,4 +2,5 @@ identifier: Bash
 wikidata: Q189248
 extensions:
   - sh
-line_continuation: '\'
+line_continuation:
+  - backslash

data/Language/C.yaml

@@ -10,7 +10,8 @@ aliases:
 extensions:
   - c
   - h
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   # comment delimiters
   - double_slash

data/Language/CPlusPlus.yaml

@@ -11,7 +11,8 @@ extensions:
   - cpp
   - h
   - hpp
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   # comment delimiters
   - double_slash

data/Language/CSharp.yaml

@@ -9,7 +9,8 @@ aliases:
   - CSharp
 extensions:
   - cs
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   # comment delimiters
   - triple_slash

data/Language/Golang.yaml

@@ -5,7 +5,8 @@ aliases:
   - golang
 extensions:
   - go
-line_continuation: '.'
+line_continuation:
+  - dot
 delimiters:
   # comment delimiters
   - double_slash

data/Language/JavaScript.yaml

@@ -8,7 +8,8 @@ aliases:
   - node
 extensions:
   - .js
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   - double_slash
   - multiline_slash_star

data/Language/PHP.yaml

@@ -7,7 +7,8 @@ aliases:
   - PHP
 extensions:
   - php
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   # comment delimiters
   - double_slash

data/Language/Python.yaml

@@ -7,7 +7,8 @@ aliases:
   - py
 extensions:
   - py
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   - hash
   - single_quote_slash_escape

data/Language/Rust.yaml

@@ -7,7 +7,8 @@ aliases:
 extensions:
   - rs
   - rlib
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   # comment delimiters
   - double_slash

data/Language/Swift.yaml

@@ -6,7 +6,8 @@ aliases:
   - swift
 extensions:
   - swift
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   - double_slash
   - multiline_slash_star

data/Language/Verilog.yaml

@@ -17,7 +17,10 @@ aliases:
 extensions:
   - v
   - vh
-line_continuation: '\'
+line_continuation:
+  - backslash
+  - vertbar
+  - ampersand
 delimiters:
   # comment delimiters
   - double_slash

data/Language/VisualBasic.yaml

@@ -8,7 +8,8 @@ aliases:
 extensions:
   - vb
   - bas
-line_continuation: '_'
+line_continuation:
+  - underscore
 delimiters:
   # comment delimiters
   - single_quote_comment

data/Language/YAML.yaml

@@ -3,7 +3,8 @@ wikidata: Q281876
 extensions:
   - yml
   - yaml
-line_continuation: '\'
+line_continuation:
+  - backslash
 delimiters:
   - single_quote_padded_escape
   - double_quote_slash_escape

data/LineCont/ampersand.yaml

@@ -0,0 +1 @@
+start: '&\n'

data/LineCont/backslash.yaml

@@ -0,0 +1 @@
+start: '\\\n'

data/LineCont/dot.yaml

@@ -0,0 +1 @@
+start: '.\n'

data/LineCont/underscore.yaml

@@ -0,0 +1 @@
+start: '_\n'

data/LineCont/vertbar.yaml

@@ -0,0 +1 @@
+start: '|\n'

models/Language.yaml

@@ -13,7 +13,7 @@ versions: String
 grammar_file: String
 aliases: Alias[]
 extensions: FileExtension[]
-line_continuation: String
+line_continuation: LineCont[]
 delimiters: Delimiter[]
 datatypes: DataType[]
 keywords: Keyword[]

models/LineCont.yaml

@@ -0,0 +1,2 @@
+type: LineCont
+start: String

templates/Language.html.jinja2

@@ -55,6 +55,12 @@
         {{ m.show_list(language.datatypes) }}
       </td>
     </tr>
+    <tr>
+      <th>Line Continuation Characters</th>
+      <td>
+        {{ m.show_list(language.line_continuation) }}
+      </td>
+    </tr>
     <tr>
       <th>Keywords</th>
       <td>