Funding links

[cvvergara]

Currently we signed up to
https://opencollective.com/pgrouting
https://funding.communitybridge.org/projects/pgrouting
Wait to see how response is on both sites during one year to decide if we keep both, or only one of them

[dkastl]

In general we should prefer the Linux Foundation.
But the approval took some time and in the meanwhile I had applied for Open Collective as well.

I don't think we will stop using the Linux Foundation.
But we may stop Open Collective.