move log to temp path
share over LAN
fix UseShellExecute problem
do not expose SaveConfig to Views
refine qrcode
lint code
update CHANGES
bump
version check
back to 2.0
add comments about .net 4.0 crash
Merge remote-tracking branch 'upstream/master' into dev

Conflicts:
	shadowsocks-csharp/Controller/Local.cs
	shadowsocks-csharp/Controller/PACServer.cs
	shadowsocks-csharp/Controller/PolipoRunner.cs
	shadowsocks-csharp/Controller/ShadowsocksController.cs
	shadowsocks-csharp/Program.cs
	shadowsocks-csharp/View/ConfigForm.Designer.cs
	shadowsocks-csharp/View/ConfigForm.cs