FIX _write_raw():  don’t write meas_id if it is not specified
Merge pull request #1555 from christianbrodbeck/raw

FIX _write_raw():  don’t set meas_id to invalid value
FIX (GUI): FREESURFER_HOME test
Merge pull request #1565 from christianbrodbeck/gui

FIX (GUI): FREESURFER_HOME test
fix time_generalization logger
Merge pull request #1566 from dengemann/fix_time_gen_print

FIX: fix time_generalization logger
FIX: Use rannge instead of unit_mul to deal with EEG units to maintain compatibility with .fif format and MNE-C
FIX : fix writing of utf8 strings in report
FIX TESTS: Use skip_mayavi() for only add_section functions
FIX py3k + starting plot for render_bem
ENH: Smaller test dataset (150MB)
ENH: More tests covered
FIX: Revert LCMV tests
WIP: Use higher verbosity to see stalled test
FIX: Fix excessively slow test
FIX: Fix tests
FIX: Fix Travis
FIX: Skip vol test on Travis
FIX: Fix tests
FIX: More verbose Travis