Updated version to 0.5.0-SNAPSHOT.
Customized JSON property names for the request/response objects (#35).
Implemented initial request/command "opt" properties (#37).
Refactored code in preparation for request/command option support.
Split up the request/command execution code.
Cleaned up class imports.
Implemented support for request/command options (#37).
Fixed bad RequestFilter bug.
Implemented initial script-caching functionality (#36).
Implemented "queryc" command (#36).
Implemented single-character command shortcuts (#35).
Fixed bug that occurs when Query.cache argument is null.