Inline-snapshot

Feat

- check if inline-snapshot is used in combination with xdist and notify the user that this is not possible

Fix

- change the quoting of strings does not trigger an update

Fix

- removed restriction that the snapshot functions has to be called snapshot (72)
- report error in tear down for sub-snapshots with missing values (70)
- element access in sub-snapshots does not create new values

Fix

- make typing less strict

Feat

- prevent dirty-equal values from triggering of updates
- fix lists by calculating the alignment of the changed values
- insert dict items
- delete dict items
- preserve not changed dict-values and list-elements

Fix

- update with UndecidedValue
- handle dicts with mulitple insertions and deletions
- handle lists with mulitple insertions and deletions
- fixed typing and coverage

Refactor

- removed old _needs_* logic
- removed get_result
- use _get_changes api for DictValue
- use _get_changes api for CollectionValue
- use _get_changes api for MinMaxValue
- use _get_changes
- moved some functions

Feat

- removed old --update-snapshots option

Fix

- use utf-8 encoding to read and write source files