clrification on `this`
Error messages with TS.
Merge pull request #9 from mbrobbel/update

Error messages with TS.
fixed example
constraints in TS
Update day8.md
Fix trans/minijava.str fix code formatting
Merge pull request #10 from arian/patch-1

Fix trans/minijava.str fix code formatting
Update day8.md
Update and rename day7.md to day10.md
Update and rename day8.md to day11.md
Update and rename day9.md to day12.md
Update day8.md

Typing of parameters requires reimplementation in TS.
Create day9.md
inheritance
constraints
Update day8.md
Update day8.md
some subtyping
Update day9.md