Change set since 0.5.17:
7988903: Bump to 0.5.18
9eb97c5: Revert "Experimental: enforce overlap check not only in claiming but also in loading from disk"
fefaea8: Revert "Try fixing the check"
5c131f0: Revert "Bump to 0.5.16"
5a53f37: Revert "Make it more clear which areas are overlapping"
