unirest-java-1.4.8 release

• Bug fixes
• Multipart can now take InputStream as parameter

unirest-java-1.4.7 release

Added Class type in ObjectMapper interface
Updated formatting
Added formatting file

unirest-java-1.4.6 release

File upload support using InputStream
Support for asObject response type (serializing).
Case-insensitive lookup in Headers.getFirst(key)
Sorted fields as part of the POST request
Typo fix