Update spanish translation
Merge pull request #2857 from federicobond/update-es-language

Update spanish translation
turn off completion by default, and rename the pref
update the code completion pref here too
get the date right
starting the next release
remove debug message about ctrl key
note about the removal
Replace instances of StringBuffer with StringBuilder
Replace instances of Hashtable with HashMap
Merge pull request #2863 from federicobond/migrate-unsynchronized

Migrate to unsynchronized data structures
Update README.md
make note of pull request
Merge branch 'master' of github.com:processing/processing