Update Bug Report template

.github/issue_template.md

@@ -4,10 +4,12 @@ Thanks for taking the time to report an issue. Reporting issues helps us improve
 
 Please do not ask questions in the bug tracker. Please ask questions on the Crypto++ Users List at http://groups.google.com/forum/#!forum/cryptopp-users.
 
+Please _do not_ ask questions at Stack Overflow. We may not be able to answer your question.
+
 There is a wiki page with information on filing useful bug reports. If you have some time please visit http://www.cryptopp.com/wiki/Bug_Report on the wiki. The executive summary is:
 
 * State the operating system and version (Ubutnu 17 x86_64, Windows 7 Professional x64, etc)
-* State the version of the Crypto++ library (Crypto++ 5.6.5, Master, etc)
+* State the version of the Crypto++ library (Crypto++ 7.0, Master, etc)
 * State how you built the library (Makefile, Cmake, distro, etc)
 * Show a typical command line (the output of the compiler for cryptlib.cpp)
 * Show the link command (the output of the linker for libcryptopp.so or cryptest.exe)