Merge branch 'master' of https://github.com/landakram/hopper into racketbackend
Cleaning up debugging code
Merge from master
Debug var resetting not working
Fixed var updating
Fix #37
Add concat to backend
Add exp to backend
Set reader to not use backend yet
Merge remote-tracking branch 'origin' into racketbackend
Merge remote-tracking branch 'upstream/master'
Fix var decl returning dynamic and second half of operation not being type checked.
Add test for outer
Merge branch 'working'