keep bti_info as private attribute
add prop bti labels
favor attr over prop
dont be greedy
Merge pull request #1361 from maedoc/conserve-4d-ch-names

keep 4D ch_name in separate field
fix for pandas 0.15
FIX: do not repeat samples on buffer borders
DOC: update whats new
Merge pull request #1618 from mainakjas/fix_ftclient_buffer

FIX: do not repeat samples on buffer borders