add screenwatcher to screen
cleaner implementation
utf8_53
base64
Merge pull request #107 from asmagill/base64

Import base64 extension
Merge pull request #106 from asmagill/utf8_53

Import utf8_53 extension
Merge pull request #105 from asmagill/screen.watcher

Import screen.screenwatcher extension
Merge remote-tracking branch 'Hammermaster/master' into playground