Pyunsplash

This is the second release candidate for production ready 1.0.0 of PyUnsplash.
Thanks to all the early adopters and bug reporters: thanks to you there have
been a number of improvements and bugfixes and we are progressing the rc process.

This release brings mainly one bugfix:

- 13 search.get_next_page() does not work

**Todo**
- Authorization workflow & Current user
- Write operations

This is the first release candidate for production ready 1.0.0 of PyUnsplash. Thanks to all the early adopters, there have been a number of improvements and bugfixes and now should be a good time to start the rc process.

This release brings one useful addition:

Introduction of SinglePhoto which allows instantiating a Photo object using a photo_id
Deprecated format value 'str' in favor of 'txt' in get_attribution()

- Fix documentation for random photos API endpoint
- Update library and documentation for deprecated 'curated' photos
- Update library and documentation for deprecated 'curated' collection
- Add library warning in logs for 'curated' when used
- Fix documentation for object parameter ``type_`` instead of ``type``
- Core library now raising exception for invalid parameters
- Added support for user statistics API, and related doc and tests


**Todo**
- Authorization workflow & Current user
- Write operations

- Fix documentation for random photos API endpoint
- Update library and documentation for deprecated 'curated' photos
- Update library and documentation for deprecated 'curated' collection
- Add library warning in logs for 'curated' when used
- Fix documentation for object parameter ``type_`` instead of ``type``
- Core library now raising exception for invalid parameters
- Added support for user statistics API, and related doc and tests


**Todo**
- Authorization workflow & Current user
- Write operations

Fixed issues submitted on GitHub:
- Search class: Param "type" is "type_"
- Provide property for `download_location` in PyUnsplasy.Photo class

Add Python3 support