SKSE_HTTP_v0.1.0-beta8

• string values are now tested if they are valid utf-8 values. If not the string will not be added to the JSON.
• for string arrays each element is tested individually and if not valid utf-8 is not added to the string array
• both setString and setStringArray methods now return a bool. If at least one value has not been valid utf-8 the functions return false.