Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Added helper to open file with emacsclient using filename:line path
Install SLIME from MELPA
Update copyright years
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Update copyright years
  Install SLIME from MELPA
Merge remote-tracking branch 'origin/master'

* origin/master: