fix: Numbers to floats

[pnadolny13]

Closes #103

• Replaces fix: add test for numeric precision settings that arent floats #104
• This implementations is based on this comment bug: IndexError due to numeric precision logic #103 (comment). Wise treats all number json types as floats in snowflake.
• As part of this I reverted the changes from fix: handle precision from multipleOf number types #97 since they arent needed anymore. We'll let the json schema validation enforce this vs having strict snowflake schema enforcement.

Warning: I think this is a breaking change because I believe the target will now try to update the type of existing columns from NUMBER to DOUBLE which throws a cannot change column NUM_COL from type NUMBER(38,0) to FLOAT.

@edgarrmondragon how do you think we should handle this in terms of breaking changes? Should this be the 1.0 release?

[edgarrmondragon]

Since we're in the 0.* series still, I think doing a minor release for a breaking change is still acceptable and users may still feel some pain regardless if they bump to 0.5.0 or 1.0.0.

[pnadolny13]

@edgarrmondragon do you have any thoughts or is this good to merge? I'll plan to cut a new minor release after this merges.

[edgarrmondragon]

@pnadolny13 This LGTM. Let's just call out the potential breaking change in the release notes.