[Tagging] Feature Proposal - RFC - Parking lane conditionals

[riiga at lysator.liu.se]

I've been working on a proposal aimed at introducing conditionals for  
parking lanes and deprecating the use of certain older tags.

In a nutshell, the proposal is:
1. Use the conditional restrictions scheme for conditional parking  
restrictions.
2. Cleanly separate tagging of physical alignment (parking:lane=*) and  
condition to park (parking:condition=*).
3. Update some wording to better reflect practice and new tagging.

For the full details, please see the proposal page on the wiki:
https://wiki.openstreetmap.org/wiki/Proposed_features/Parking_lane_conditionals

Feedback is most welcome, preferably on the discussion page of the proposal.

--
Regards,
riiga