Update ol requirement from 6.0.0-dev.1569433045197 to 6.0.0

[dependabot-preview]

Updates the requirements on ol to permit the latest version.

Release notes

Sourced from ol's releases.

6.0.0

Wow. The 6.0 release includes changes from 1780 commits in 544 pull requests since the 5.3 release. Thanks to all who contributed to this effort.

A major feature in this release is the ability to compose layers with different renderer types. Previously, the map used a single rendering strategy, and all layers in your map had to implement that strategy. Now it is possible to have a map with layers that use different rendering technologies. This makes it possible, for example, to have Canvas (2D) layer composed together with a WebGL based layer in the same map. It is also possible to create layers with custom renderers. So you could have a map that uses another library (like d3) to render one layer and use OpenLayers to render the other layers. We will continue to take advantage of this new flexibility in future releases.

In addition, the 6.0 release includes a number of vector tile rendering improvements and should have a lower memory footprint overall. The release also includes a number of experimental features that are not yet part of the stable API. Take a look through the examples for a new WebGL based renderer and the experimental useGeographic() function. Watch upcoming releases for more detail on these.

This release includes a number of backwards incompatible changes. Take a careful look at the notes below when upgrading your application from the 5.3 release.

Backwards incompatible changes

Usage of map.forEachLayerAtPixel

Due to performance considerations, the layers in a map will sometimes be rendered into one
single canvas instead of separate elements.
This means map.forEachLayerAtPixel will bring up false positives.

The easiest solution to avoid that is to assign different className properties to each layer like so:

new Layer({
   // ...
   className: 'my-layer'
})

Please note that this may incur a significant performance loss when dealing with many layers and/or
targetting mobile devices.

Removal of TOUCH constant from ol/has

If you were previously using this constant, you can check if 'ontouchstart' is defined in window instead.

if ('ontouchstart' in window) {
  // ...
}

Removal of GEOLOCATION constant from ol/has

If you were previously using this constant, you can check if 'geolocation' is defined in navigator instead.

if ('geolocation' in navigator) {
  // ...
}

Removal of CSS print rules

... (truncated)

Commits

• See full diff in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Note: This repo was added to Dependabot recently, so you'll receive a maximum of 5 PRs for your first few update runs. Once an update run creates fewer than 5 PRs we'll remove that limit.

You can always request more updates by clicking Bump now in your Dependabot dashboard.

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
• @dependabot use these labels will set the current labels as the default for future PRs for this repo and language
• @dependabot use these reviewers will set the current reviewers as the default for future PRs for this repo and language
• @dependabot use these assignees will set the current assignees as the default for future PRs for this repo and language
• @dependabot use this milestone will set the current milestone as the default for future PRs for this repo and language
• @dependabot badge me will comment on this PR with code to add a "Dependabot enabled" badge to your readme

Additionally, you can set the following in your Dependabot dashboard:

• Update frequency (including time of day and day of week)
• Pull request limits (per update run and/or open at any time)
• Automerge options (never/patch/minor, and dev/runtime dependencies)
• Out-of-range updates (receive only lockfile updates, if desired)
• Security updates (receive only security updates, if desired)

Finally, you can contact us by mentioning @dependabot.