v1.0.0-beta.2

Major refactoring of the http client handling. Sphere client uses now PSR http messages for internal request and response representation and ships with a guzzle5 and guzzle6 http client adapter which will be automatically used. It's also possible to register new http client adapters implementing Sphere\Core\Client\Adapter\AdapterInterface

• switch composer to caret operator
• add redis to travis configuration
• update customer create endpoint with API changes
• add productSlug to LineItem
• add homepage and support sections to composer.json
• add accessor for adapter factory to client
• [BREAKING] move guzzle to http client adapter to reduce dependencies
• sphere client can use guzzle5 and guzzle6
• [BREAKING] fix product variants mapping type
• add price validity ranges
• add php-intl as dependency to readme for development
• [BREAKING] update price update and remove action to priceId
• update links to documentation
• [DEPRECATED] ProductSetMetaAttributesAction
• add meta attribute update actions for categories
• add meta attribute update actions for products
• change userAgent signature
• add missing type mappings to requests
• [BREAKING] add required attributes to StateDraft add behat test for StateCreate
• add ReviewCreateRequest
• add CommentCreateRequest
• add ProductDiscountCreateRequest
• add ProductTypeCreateRequest
• add hipchat notification
• set values collection type only on deserialisation in AttributeType
• FilterRange adds quotes to string and formats DateTime
• add ShippingMethodCreateRequest
• add InventoryCreateRequest
• add InventoryEntry model
• add DiscountCodeCreateRequest
• add CustomerGroupCreateRequest
• add ChannelCreateRequest
• add CartDiscountCreateRequest
• remove context type hint from TaxCategoryDraft
• add zone create request
• add context to ZoneDraft constructor
• add tax category create request
• add importOrder unit tests
• add order import request and models
• add sdk user agent to client header
• expose headers and status code in response objects
• refactor getters for results and facets in paged responses
• fix bool filter more type safe filter to string conversion
• more type safe filter to string conversion
• fix multi facet and filter params
• fix type of TaxRate