feat: rename Statement#get -> value and add new get method to return …

[DjDeveloperr]

…row as object. Closes #58

• Statement#get returns row as object now (compared to Statement#all which returns all rows as objects at once)
• Statement#value was added to return row (compared to Statement#values which returns all rows as arrays at once)

This PR includes breaking changes, but it will be included in minor version bump since we're in v0.x.