windows percision lost

- Did you find a bug in datatable, or maybe the bug found you?
Tell us what it is.

- How to reproduce the bug?
**This part is the most important**. Please provide a code snippet which, when
executed in console, demonstrates the problem. If necessary, attach any data
files to the issue.

- What was the expected behavior?
In case it is not obvious, please tell us what result should your code
produce.
'0.35' convert to float64 should be 0.35
- Your environment?
What is your datatable version, python version, and operating system?
win11 x64
python 3.7.16
- Tag the issue with `[bug]` or `[segfault]` (depending on whether it crashes
Python or not).

- Thank you for contributing, and sorry for the inconvenience.