Use Briles/gruvbox .tmTheme files instead of peaceant's port

.gitmodules

@@ -185,9 +185,6 @@
 [submodule "assets/syntaxes/02_Extra/AsciiDoc"]
 	path = assets/syntaxes/02_Extra/AsciiDoc
 	url = https://github.com/asciidoctor/sublimetext-asciidoc.git
-[submodule "assets/themes/gruvbox"]
-	path = assets/themes/gruvbox
-	url = https://github.com/peaceant/gruvbox.git
 [submodule "assets/syntaxes/02_Extra/GLSL"]
 	path = assets/syntaxes/02_Extra/GLSL
 	url = https://github.com/euler0/sublime-glsl
@@ -206,3 +203,7 @@
 [submodule "assets/themes/Coldark"]
 	path = assets/themes/Coldark
 	url = https://github.com/ArmandPhilippot/coldark-bat.git
+[submodule "assets/themes/gruvbox"]
+	path = assets/themes/gruvbox
+	url = https://github.com/subnut/gruvbox-tmTheme.git
+	branch = bat-source

CHANGELOG.md

@@ -61,6 +61,7 @@
 ## New themes
 
 - Coldark, see #1329 (@armandphilippot)
+- Gruvbox, see #1291 (@j0hnmeow)
 
 
 # v0.16.0

assets/themes/gruvbox

@@ -1 +1 @@
-Subproject commit e3db74d0e5de7bc09cab76377723ccf6bcc64e8c
+Subproject commit 64c47250e54298b91e2cf8d401320009aba9f991

tests/assets.rs

@@ -33,9 +33,8 @@ fn all_themes_are_present() {
             "ansi",
             "base16",
             "base16-256",
-            "gruvbox",
+            "gruvbox-dark",
             "gruvbox-light",
-            "gruvbox-white",
             "zenburn"
         ]
     );