Add Python-3.6.8 and Python-3.7.2

Author: utahta

installer/installer_python_test.go

@@ -24,8 +24,8 @@ func TestPython_Install(t *testing.T) {
 		version string
 	}{
 		{"2.7.15"},
-		{"3.6.6"},
-		{"3.7.0"},
+		{"3.6.8"},
+		{"3.7.2"},
 	}
 
 	for _, testcase := range testcases {

origin/package_test.go

@@ -10,8 +10,9 @@ func TestFindPackage(t *testing.T) {
 		arg      string
 		expected string
 	}{
-		{"2.7.14", "2.7.14"},
-		{"3.6.4", "3.6.4"},
+		{"2.7.15", "2.7.15"},
+		{"3.6.8", "3.6.8"},
+		{"3.7.2", "3.7.2"},
 		{"https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz", "3.6.4"},
 	}
 	for _, test := range tests {

origin/python_package.go

@@ -80,9 +80,11 @@ var pythonPackages = map[string]Package{
 	"3.6.5": NewPythonPackage("https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz#ab25d24b1f8cc4990ade979f6dc37883"),
 	"3.6.6": NewPythonPackage("https://www.python.org/ftp/python/3.6.6/Python-3.6.6.tgz#9a080a86e1a8d85e45eee4b1cd0a18a2"),
 	"3.6.7": NewPythonPackage("https://www.python.org/ftp/python/3.6.7/Python-3.6.7.tgz#c83551d83bf015134b4b2249213f3f85"),
+	"3.6.8": NewPythonPackage("https://www.python.org/ftp/python/3.6.8/Python-3.6.8.tgz#48f393a04c2e66c77bfc114e589ec630"),
 
 	"3.7.0": NewPythonPackage("https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz#41b6595deb4147a1ed517a7d9a580271"),
 	"3.7.1": NewPythonPackage("https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tgz#99f78ecbfc766ea449c4d9e7eda19e83"),
+	"3.7.2": NewPythonPackage("https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz#02a75015f7cd845e27b85192bb0ca4cb"),
 }
 
 func (p *pythonPackage) Type() PackageType {