Lowbar

- Added `bar_desc` option, which will display a description beside (left) the progress bar. The description will be hidden if the console size is too small to accommodate both the bar and the description.
- Added `remove_ends` option, which removes the two chars (`[` & `]`) used to define the two ends of the progress bar.
- Added extra checks to make sure `bar_load_fill` and `bar_blank_fill` are single char strings.
- Reduced sleep call duration in `update_smooth()` from 0.005 to 0.002.

- Fixed broken update (1.4.1), `bar_iter`'s default value type set to int instead of NoneType

- Automatically convert `bar_iter` to a range object if it's an int

- Renamed class `LowBar` to `lowbar`
New usage is
python3
bar = lowbar.lowbar()

instead of
python3
bar = lowbar.LowBar()


***Note:** We still keep `LowBar` as an alias to `lowbar`. This way, we dont have to bump the major version number to 2, since the change becomes backwards compatible (Will not break any programs which may still use the older class name `LowBar`)*

- Added support for use as iterable:
python3
for i in lowbar.LowBar(range(100)):
time.sleep(0.5) task

- Added `new()` as an alias for `update(0)`