Adding functionality from recent updates to the library

[dendd1]

• New filtering parameter in the method for getting the list of orders
• "position" field in user getter API-methods
• Reflecting the "links" between orders in the API
• API-methods for loading web analytics data
• API-Methods for working with currencies
• Currency in store API-methods
• Currency in API-Methods of price types
• Currency in API-methods
• Filters by money fields in list API-methods

[codecov-commenter]

Codecov Report

Patch coverage: 65.43% and project coverage change: -0.32% :warning:

Comparison is base (407ecf5) 75.83% compared to head (e3e8d67) 75.51%.

:exclamation: Current head e3e8d67 differs from pull request most recent head 583362b. Consider uploading reports for the commit 583362b to get more accurate results

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #86 +/- ## ========================================== - Coverage 75.83% 75.51% -0.32% ========================================== Files 9 9 Lines 2578 2659 +81 ========================================== + Hits 1955 2008 +53 - Misses 374 388 +14 - Partials 249 263 +14 ``` | [Files Changed](https://app.codecov.io/gh/retailcrm/api-client-go/pull/86?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=retailcrm) | Coverage Δ | | |---|---|---| | [response.go](https://app.codecov.io/gh/retailcrm/api-client-go/pull/86?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=retailcrm#diff-cmVzcG9uc2UuZ28=) | `100.00% <ø> (ø)` | | | [types.go](https://app.codecov.io/gh/retailcrm/api-client-go/pull/86?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=retailcrm#diff-dHlwZXMuZ28=) | `70.37% <ø> (ø)` | | | [client.go](https://app.codecov.io/gh/retailcrm/api-client-go/pull/86?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=retailcrm#diff-Y2xpZW50Lmdv) | `70.39% <65.43%> (-0.22%)` | :arrow_down: |

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