Version 0.1_1 is already extant so there is no point at all in releasing a newer version with a lower version number.

Given where you are, I suggest:

1. Keep releasing dev versions until you are happy with the code/tests. Your next dev version should be 0.1_2 and then 0.1_3 and so on.
2. When you have a release you think is worthy of non-dev status, release that and bump at least the minor version. However, in your shoes I would at that point effectively start again and release 1.00.

The more digits used in each part of the version number, the more flexibility you get to release lots of intermediate versions. Personally, I like to use double digits so my version numbers go like this:

• 0.06 - stable release
• 0.06_01 - dev release
• 0.06_02 - dev release
• 0.06_03 - dev release
• 0.07 - stable release

... and so on. The numbers then are always increasing and there's plenty of scope for lots of dev releases without running out of digits. Other folks go to 3 digits in each part just like perl itself, use whichever you prefer.

I generally agree with xdg in Version numbers should be boring which was referred to elsewhere recently.