chore: documentation of refactor

test: logger usage from classifier page

feat: add logger

fix: observations now persist across page switches

fix: classifier tabs render their own content only

feat: challenges and refactoring of page order

feat: functional sliders and date input

feat: requests basic architecture

feat: extract dataset manipulation from map features

fix: revert the caption in whale viewer for tests

fix: states over pages

feat: arranging states and updating requirements

feat: new color palette

feat: functional cetacean classifier

feat: content split to page and gallery maps good to go

feat: pages skeleton

Merge pull request #40 from sdsc-ordes/fix/timezones

Merge pull request #39 from sdsc-ordes/fix/nofail-on-missing-ext-resource

fix: use string form of timezone not tzinfo object

fix: added timezone to InputObservation, updated tests

fix: timezone from file metadata, or from locale if absent

fix: email field must be populated to pass validation

test: updated to test behaviour according to debug flag state

fix: env variable defines whether fields autopopulated

fix: added broad exception handling branch too, cleanup

fix: simplified try_download_dataset

fix: catch failing external resouce: huggingface dataset

docs: mkdocs needs modules (adding __init__.py)

test: visual test of presented content, persistent to tab switching

chore: added custom marker to slow (>20s) test, updated CI to skip

fix: all usage of session_state.files explicitly a list now

test: implemented demo/snippet using app code for sidebar, plus test

test: new test for input validation, and fix typo in args

chore: adding a property and tidy up fstring warnings

test: first steps with AppTest and a mock multi-file file_uploader

chore: tidy up main

fix: retired use of tab_log in session state

chore: moved all session state init to relevant modules

fix: typehints compatible with py3.9

doc: added docstrings to new functions

fix: remove highlighting for completion, not valid before v1.41.0

chore: cleanup variable names and add docstrings

chore: moved debug function to relevant module, and docstring

chore: clean up function naming

test: updated test to match interface; solved other xfail tests

feat: extended InputObservation to contain species/prediction info

chore: tidy up of workflow and debug clutter

fix: InputObservation uses date, time, and raw_image_datetime

feat: push observations functions for multi-file handling

fix: instantiating InputObservation with new call signature