feat(base16): add new Nightly highlight groups

Author: echasnovski

lua/mini/base16.lua

@@ -488,6 +488,7 @@ H.apply_palette = function(palette, use_cterm)
   hi('DiffChange',     {fg=p.base0E, bg=p.base01, attr=nil,            sp=nil})
   hi('DiffDelete',     {fg=p.base08, bg=p.base01, attr=nil,            sp=nil})
   hi('DiffText',       {fg=p.base0D, bg=p.base01, attr=nil,            sp=nil})
+  hi('DiffTextAdd',    {link='DiffAdd'})
   hi('Directory',      {fg=p.base0D, bg=nil,      attr=nil,            sp=nil})
   hi('EndOfBuffer',    {fg=p.base03, bg=nil,      attr=nil,            sp=nil})
   hi('ErrorMsg',       {fg=p.base08, bg=p.base00, attr=nil,            sp=nil})
@@ -509,6 +510,7 @@ H.apply_palette = function(palette, use_cterm)
   hi('Normal',         {fg=p.base05, bg=p.base00, attr=nil,            sp=nil})
   hi('NormalFloat',    {fg=p.base05, bg=p.base01, attr=nil,            sp=nil})
   hi('NormalNC',       {fg=p.base05, bg=p.base00, attr=nil,            sp=nil})
+  hi('OkMsg',          {fg=p.base0B, bg=nil,      attr=nil,            sp=nil})
   hi('Pmenu',          {fg=p.base05, bg=p.base01, attr=nil,            sp=nil})
   hi('PmenuExtra',     {fg=p.base05, bg=p.base01, attr=nil,            sp=nil})
   hi('PmenuExtraSel',  {fg=p.base05, bg=p.base01, attr='reverse',      sp=nil})
@@ -530,6 +532,8 @@ H.apply_palette = function(palette, use_cterm)
   hi('SpellRare',      {fg=nil,      bg=nil,      attr='undercurl',    sp=p.base0E})
   hi('StatusLine',     {fg=p.base04, bg=p.base02, attr=nil,            sp=nil})
   hi('StatusLineNC',   {fg=p.base03, bg=p.base01, attr=nil,            sp=nil})
+  hi('StderrMsg',      {link='ErrorMsg'})
+  hi('StdoutMsg',      {link='MsgArea'})
   hi('Substitute',     {fg=p.base01, bg=p.base0A, attr=nil,            sp=nil})
   hi('TabLine',        {fg=p.base03, bg=p.base01, attr=nil,            sp=nil})
   hi('TabLineFill',    {fg=p.base03, bg=p.base01, attr=nil,            sp=nil})
@@ -652,7 +656,8 @@ H.apply_palette = function(palette, use_cterm)
   hi('LspCodeLensSeparator', {link='Comment'})
 
   -- Built-in snippets
-  hi('SnippetTabstop', {link='Visual'})
+  hi('SnippetTabstop',       {link='Visual'})
+  hi('SnippetTabstopActive', {link='SnippetTabstop'})
 
   -- Built-in markdown syntax
   hi('markdownH1', {fg=p.base09, bg=nil, attr=nil, sp=nil})