[elpa] externals/async updated (6d164db151 -> a75d35214d)

[ELPA Syncer]

elpasync pushed a change to branch externals/async.

      from  6d164db151 Merge pull request #135 from skangas/customize-group
       new  51e8e28e17 Add a copy of the GPL license
       new  4e764e4107 Remove old FSF address
       new  5e95e25f66 Merge branch 'master' into license
       new  a75d35214d Merge pull request #133 from tuliom/license


Summary of changes:
 Makefile | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)