Timeline: Fix for majorLabels showing wrong dates

[knokit]

majorLabels were being rendered with wrong date (rendered date of the next step in the scale).

Screenshot of the issue: (check it live here)

Changes:

• TimeStep.getCurrent() returns a clone of current date, in order to avoid accidental modifications outside of TimeStep class
• Removed some unused variables from TimeAxis._repaintLabels() and render majorLabels with the correct date

[yotamberk]

Thanks for the PR but I don't see what the bug is. Where do you see the wrong date?

[knokit]

Using the "D MMM YYYY" format for the majorLabels, you can see that they show a different dates than the ones showed in the respective minorLabels, as visible in the screenshot above. Is this the correct behaviour?

Example:
minorLabel shows 1 (of April 2018), while majorLabel shows 6 Apr 2018 when it should be "1 Apr 2018"

[yotamberk]

Uh ha! Ok I see it now.
Well done!

[yotamberk]

Nice job!