v0.3-alpha.4

Disable strict type setting.

v0.3-alpha.3

Support external payment methods.

v1.0-alpha.2: Round currency values.

Klarna API requires integer values and cast float values to integer if necessary.
However, for some circumstances values like `469.00000000000006` and `711.9999999999998` were submitted to the API server. Casting these values to integer would result in precision errors.

(cherry picked from commit ca4ecf9)

v0.3-alpha.2

Merge if statement

v1.0-alpha.1

Add translations.

v0.3-alpha.1: Add translations.

(cherry picked from commit 3606ad83cb3c3ca189e9240baabccd51ddf1e764)