Merge remote-tracking branch 'origin/logic/wenhao' into controller/sharon
Merge remote-tracking branch 'origin/logic/wenhao' into controller/sharon
Fixed messages
Merge remote-tracking branch 'origin/logic/wenhao' into controller/sharon
Output format fixed
Merge remote-tracking branch 'origin/logic/wenhao' into controller/sharon
Check for null date before attempting to print

#64
Merge commit '8ec60a9a1deeab97c03e4b7b1e33f4bb0b29fbaa' into ui/victor
#64
Added more validation for input

#63
#51
Merge branch 'ui/victor' into parser/Victor
Refactored code for printing priority
Removed DONE Additional Argument Type
Added validation for Deadline and Priority additional arguments

#51
Refactored Code
Added new keywords
"dd" and "dl" for deadline
"ds" for description
Supports --done to be parsed as --tag done
Added toString() for Additional Argument
Added toString for Command
Added test cases for parseToDate