fixes to css, sh, and tex syntaxes + adjust SpecialKey for nvim

after/syntax/css.vim

@@ -10,6 +10,5 @@ hi! link cssFunctionComma     Delimiter
 hi! link cssNoise             DraculaPink
 hi! link cssProp              DraculaCyan
 hi! link cssPseudoClassId     DraculaGreenItalic
-hi! link cssSelectorOp        Delimiter
 hi! link cssUnitDecorators    DraculaPink
 hi! link cssVendor            DraculaGreenItalic

after/syntax/sh.vim

@@ -0,0 +1,5 @@
+if dracula#should_abort('bash', 'ksh', 'posix', 'sh')
+    finish
+endif
+
+hi! link shCommandSub NONE

after/syntax/tex.vim

@@ -0,0 +1,18 @@
+if dracula#should_abort('tex')
+    finish
+endif
+
+hi! link texBeginEndName  DraculaOrangeItalic
+hi! link texBoldItalStyle DraculaOrangeBoldItalic
+hi! link texBoldStyle     DraculaOrangeBold
+hi! link texInputFile     DraculaOrangeItalic
+hi! link texItalStyle     DraculaYellowItalic
+hi! link texLigature      DraculaPurple
+hi! link texMath          DraculaPurple
+hi! link texMathMatcher   DraculaPurple
+hi! link texMathSymbol    DraculaPurple
+hi! link texRefZone       DraculaBgDarker
+hi! link texSpecialChar   DraculaPurple
+hi! link texSubscripts    DraculaPurple
+hi! link texTitle         DraculaFgBold
+hi! link texTypeStyle     DraculaSubtle

colors/dracula.vim

@@ -1,4 +1,4 @@
-" Dracula Theme: v1.5.0 {{{
+" Dracula Theme: {{{
 "
 " https://github.com/zenorocha/dracula-theme
 "
@@ -279,6 +279,13 @@ hi! link WarningMsg   DraculaOrangeInverse
 call s:h('MatchParen', s:fg, s:pink, [s:attrs.underline])
 call s:h('Conceal', s:comment, s:bglight)
 
+" Neovim uses SpecialKey for escape characters only. Vim uses it for that, plus whitespace.
+if has('nvim')
+  hi! link SpecialKey DraculaRed
+else
+  hi! link SpecialKey DraculaSubtle
+endif
+
 hi! link Comment DraculaComment
 hi! link Underlined DraculaFgUnderline
 hi! link Todo DraculaTodo
@@ -321,7 +328,6 @@ hi! link Type DraculaCyanItalic
 hi! link Delimiter DraculaFg
 
 hi! link Special DraculaPink
-hi! link SpecialKey DraculaSubtle
 hi! link SpecialComment DraculaCyanItalic
 hi! link Tag DraculaCyan
 hi! link helpHyperTextJump DraculaLink