Update 1_Data_Types.md

Removed sets
Update 1_Data_Types.md
Update 1_Data_Types.md

Removed all mentions of sets
Update 1_Data_Types.md

Moving assinging variables to less on 0
Update 1_Data_Types.md
Update 1_Data_Types.md

Modified the thing about assigning to variables
Update 0_Variables_Types.md

Syntax error
Update 1_Data_Types.md

Changed extend&append added sort
Merge pull request #160 from karinlag/2013-07-oslo

2013 07 oslo