Point SwiftyTextTable to official repo & stable release of 0.8.0

Partially resolves #1962.

.gitmodules

@@ -15,7 +15,7 @@
 	url = https://github.com/jpsim/SourceKitten.git
 [submodule "Carthage/Checkouts/SwiftyTextTable"]
 	path = Carthage/Checkouts/SwiftyTextTable
-	url = https://github.com/jpsim/SwiftyTextTable.git
+	url = https://github.com/scottrhoyt/SwiftyTextTable.git
 [submodule "Carthage/Checkouts/Yams"]
 	path = Carthage/Checkouts/Yams
 	url = https://github.com/jpsim/Yams.git

Cartfile

@@ -1,2 +1,2 @@
 github "jpsim/SourceKitten" ~> 0.18.4
-github "jpsim/SwiftyTextTable" "characters"
+github "scottrhoyt/SwiftyTextTable" ~> 0.8.0

Cartfile.resolved

@@ -2,6 +2,6 @@ github "Carthage/Commandant" "3ff9019f7afd189c43a349f819684988031053a0"
 github "antitypical/Result" "3.2.4"
 github "drmohundro/SWXMLHash" "4.2.5"
 github "jpsim/SourceKitten" "0.18.4"
-github "jpsim/SwiftyTextTable" "fb31390e74392773d0f587a3b1481ee65056e075"
 github "jpsim/Yams" "0.4.1"
 github "jspahrsummers/xcconfigs" "4ac967d12f72c2ccc7f34d163268d09296923a7c"
+github "scottrhoyt/SwiftyTextTable" "0.8.0"

Package.swift

@@ -11,7 +11,7 @@ let package = Package(
         .package(url: "https://github.com/Carthage/Commandant.git", .branch("master")),
         .package(url: "https://github.com/jpsim/SourceKitten.git", from: "0.18.4"),
         .package(url: "https://github.com/jpsim/Yams.git", from: "0.4.1"),
-        .package(url: "https://github.com/jpsim/SwiftyTextTable.git", .branch("characters")),
+        .package(url: "https://github.com/scottrhoyt/SwiftyTextTable.git", from: "0.8.0"),
     ],
     targets: [
         .target(