Create tag 2.8.1

Create tag 2.8.0

bug #1054 Don't remove still-referenced files when unconfiguring reci…

…pes (nicolas-grekas)

This PR was merged into the 2.x branch.

Discussion
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Don't remove still-referenced files when unconfiguring recipes

Instead of #706
Fixes broken logic added in #451, which didn't account for folders.
The new logic uses only the symfony.lock file and not the recipe anymore to decide which files to remove.

Commits
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6443e31 Don't remove still-referenced files when unconfiguring recipes

Fix flex upgrades

Create tag 2.6.0

Create tag 2.5.1

Create tag 2.5.0

Create tag v1.22.0

Merge branch '1.x' into 2.x

* 1.x:
  Fix invalid version string "9999999.9999999"

bug #1029 Fix invalid version string "9999999.9999999" (nicolas-grekas)

This PR was merged into the 1.x branch.

Discussion
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Fix invalid version string "9999999.9999999"

Fix #887
Fix #983
Fix #1016

Commits
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543443a Fix invalid version string "9999999.9999999"