Fix bug #2266: before this fix, the lines of the timeline view were always sorted by alphabetical order, ignoring the native order of the model on which the group_by field points to.
Fix duplicate entries in the 'fields' argument when the 'colors' parameters uses the same field in multiple conditions.
Update README.rst
[FIX] Remove console.log
[ADD] Make timeline.fit optional
[FIX] Use stringified points
[IMP] Reversed the arrow head and fixed lint issues
[IMP] Use options parameter for line color and width
[FIX] Version number
[IMP] Minor improvements