BUG: Append the empty frame with columns, #3121
BLD: in test_perf, canonize file paths passes on command_line
BLD: test_perf -H shouldn't die if a vbench raises
ENH: support top-level read/write API for HDFStore using read_hdf/to_hdf (GH3222)
BLD: test_perf -H shouldn't die if the benchmark list is empty
Merge pull request #3244 from jreback/read_hdf

ENH: support top-level read/write API for HDFStore using read_hdf/to_hdf
BLD: test_perf, be careful about initializing vars
VB: rename duplicate-named vbench join_dataframe_index_single_key_bigger/_sort
BUG: GH3243 accept list of DataFrames as constructor input
BUG: week of year fix around leap years #2768
BUG: setitem with list elements in the indexer broken
     e.g. df.iloc[[0,1],[1,2]] += 100
Merge pull request #3246 from jreback/iloc_set

BUG: setitem with list elements in the indexer broken
VB: cut down worst runtime offenders in vb suite
BLD: test_perf, progress indicator, catch kb interrupts
BLD: test_perf, progress indicator, catch kb interrupts
BLD: add --ncalls to test_perf, to override excessive runtimes in vbench
BLD: test_perf, adjust column widths
BLD: test_perf, print pickle filename if specified
BLD: test_perf, supress Futurewarnings, DeprecationWarning
Remove the duplicated test cases