Fix handling of version contraints with major version `<1.0.0`

[RobinTheHood]

Do handling of major versions <1.0.0 like sevmer and composer:

https://getcomposer.org/doc/articles/versions.md#caret-version-range-

For pre-1.0 versions it also acts with safety in mind and treats ^0.3 as >=0.3.0 <0.4.0 and ^0.0.3 as >=0.0.3 <0.0.4