README
README. added a design issue - functions with string parameters, and
alternatives
fixed few function calls, fixed pep8 style, added refactor issue
(threshold)
added skeleton of test_misc
imported concatenate of signals to continuous namespace
added desing issue in __getitem__ when the key is Segments
put the design issue of string parameters to functions in the right
context
added idea for the right interface of __getitem__ in SegmentOfContinuous
some pep8 style fixes, new parameter for concatenate of segments, allow
concatenation of segments not in order
some tries. tests working