Iktomi

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* Auth expiration feature.

**Minor bugfixes:**

* Fixed copy and deepcopy bug for URL.
* Fixed unhandled exception caused by broken idna encoding in URL.

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* Python 3.5 support.
* 97% test coverage, multiple related issues had been discovered and fixed.
* Moved some features from iktomi.unstable to corresponding modules.
* Removed unused code: `iktomi.templates.mint`, `iktomi.forms.media`.
* Refactored handling of argument in cli app.
* Refactored URI/IRI encoding and decoding in `iktomi.web.url`.
* Hash part support in url maps, url reverse and URL object.

**Minor features:**

* Paginator: orphan items detection and handling.
* `anonymous` option for `construct_re` function, allowing to dump url maps to JS-readable regexp format.
* Appplied fork-exec scheme for code reloading.
* Moved M_ and N_ to iktomi.utils.i18n


**Minor bugfixes:**

* Fixed a bug with process termination
* Raise NotImplementedError for FileManager accepting FileAttribute
as a base item.
* Fixed a bug with relations on inherited classes in PublicQuery.
* Fixed HTML cleanup for elements containing only another element with non-empty tail.

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**Minor features:**

* `convs.length` validator is now a class, it is easier to extract minimal and
maximal lengths from `convs.length` object.
* Force hide a null label for `Select` widget if it is set to `None`.

**Minor bugfixes:**

* Fixed a bug with null value in choices of `Select` widget.
* Fixed a bug with `HTTP_HOST` variable containing a lieading dot (Opera Mobile sometimes
produces that weird requests).
* Fixed `URL.from_url` handling unicode urls.

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* `split_paragraphs_by_br` option for Html Cleaner to force paragraphs to be splitted
by `<br>` tags.
* Fixed a bug with building a reverse for nested `prefix` filters without namespaces.
* Fixed validators redefinition on converter copy by `Converter.__call__`.

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* Option for Html cleaner: wrap inline tags in paragraphs on the top level.
* Fixed schema generation whith dialect-specific fields.
* Fixed schema generation for single DB configuration.
* SQLAlchemy 1.0 support; drop support of SQLAlchemy 0.8.


**Minor features:**

* Save url template in prefix, so it can be accessed.
* JS-compatible URL template regexp compilation option: allows to dump
URL maps to JSON.
* Informative exception when metadata is not defined in model module in
multi-DB configuration.
* ResizeCrop accept force option: image will be cropped to target
proportion even it is smaller that target size.
* Command-line autocompletion interface.
* Made Html converter's tag wrapping behaviour configurable
* Html Cleaner ability to drop empty tags (configurable).
* ImageResizer's interface change: pass size instead of image object, making it useful
in AJAX requests handling.
* Add option `rate` to ResizeMixed, determining at which rate the image is
considered vertical or horizontal.
* Redefinable `file_manager` for `FileFieldSetConv`.
* Used `base64` to generate random file names for both transient and persistent files.
* Allow to set a length for both persistent and transient random file names.
* `find_file_manager` now accepts mapped objects with metadata.
* Added create_symlink method to `FileManager`.
* Support multiple arguments for `URL.qs_delete`.

**Minor bugfixes:**

* Fixed image resizer failing in some cases.
* Fixed cache_properties when setting PersistentFile to file attribute
* Warning instead of exception during image resizing via fill_from property
if original file has been lost.
* URL.from_url does not fail for broken unicode input.
* Fixed error handling and non-response return object in application.
* Fixed drop table command if there are no tables in metadata.
* Fixed readonly FieldBlock.
* Fixed PublicQuery.with_entities() to honor public condition.
* Fixed the case there is no logfile passed to fcgi CLI command.
* Fixed `None` python value handling in `convs.List.from_python`.
* Return 404 if static directory is requested.

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* Correct path normalization for `static_files`.
* `ValidationError.format_args` added.
* `LaziCli` for lazy imports in manage.py file.

**Minor features:**

* Regex can be set for url converters.
* Default error message `ValidationError` with no args.
* `webob.FileApp` is used for `static_files`.

**Minor bugfixes:**

* Fixed tests for HTML sanitizer
* Field.permissions still uses FieldPerm even if it is set by param
Field(permisssions='rw')
* Fixed long-standing bug in routing: subdomains were not cleaned up from RouteState.
RouteState is now immutable.