Added Date
Added parser to parse from string to a date object.
Refer to https://docs.google.com/spreadsheets/d/1A_enIhjFT220EPobggQ3lZ3hyz3evQ9SVA_b3iCm2ko/edit#gid=0
for the list of acceptable date formats

#40
Merge branch 'master' into parser/Victor
Executable
Added message field to Command Class
Merge branch 'ui/victor' into parser/Victor