composer/composer — pull request #1881 by sminnee (2013-05-08 06:07:38+00:00)
Title: Fix tilde constraints without a stability suffix to work like wildcard constraints

With this fix, a tilde constraint such as ~3.1 won't match unstable versions of 3.1,
but a wildcard constraint such as 3.1.* would. This seems like a confusing
inconsistency, and so I have corrected it.