Improve data for integration tests

See merge request !63

Add `P_ORIG_SYS_DOC_REF` to OrderLine

See merge request !62

Add constants for CS building address for UPS shipping

See merge request !61

Add CBS values for shipping methods

See merge request !60

Add constants for Product MinMax Active

See merge request !59

Update tests for CBS QA APIs

See merge request !58

Use CBS Product API v4

See merge request !57

Use CBS Interfacing API v2

See merge request !55

Use CBS Line API v2

See merge request !54

Use CBS Payment API v2

See merge request !53

Use CBS Header API v2

See merge request !52

Use CBS Pricing API v2

See merge request !56

Fix horrible misspelling of "IDENTIFIER"

Came across this beauty of a typo when going through cbs-techstore-client-php earlier.

Please review: @ahoffmann @weizhong-wang @lloyd-carter @KJOYNER

See merge request !51

Fix bugs in CBS service responses

`SoapOrderHeaderService` and `SoapOrderLineService` had 'typos' in the
constructors of the service response. The comparison for the return
value of `strcasecmp` was inside the function call, not after it, so PHP
got all confused and was returning the length of the strings rather than
a boolean value.

`composer.json` has already been incremented a patch version for a new release.

Please review: @ahoffmann @weizhong-wang @lloyd-carter @KJOYNER

See merge request !50

`SoapOrderHeaderService` and `SoapOrderLineService` had 'typos' in the
constructors of the service response. The comparison for the return
value of `strcasecmp` was inside the function call, not after it, so PHP
got all confused and was returning the length of the strings rather than
a boolean value.