Timetagger

New features:

* You can now also perform a plain-text search (and replace) in the "Search & manage tags" dialog (114).
* Official support for Python 3.10.

Functional improvements:

* Fix that the duration did not update when inputting start/stop times.
* Improve support for writing startstop time as e.g. "1259", and add support for am/pm format.
* When renaming a single tag, the color is now also updated.
* When selecting "started earlier', it snaps to the previous record if its no longer than 8 hours ago (was 5 hours).

Visual / UX improvements:

* Tweak navigaton by including zoom buttons.
* The today button actually moves to today, as opposed to "now" at the current scale.
* Improve dialog frame appearance.
* Improve the hint on selecting tags in the report dialog.

* Added support for daily/weekly/monthy/yearly targets

* Fixes to the hover-shadow of the records (clickable appearance).
* Tweak zoom levels: replace 7-week level with a 3-week level.
* Fixed that clicking a certain area of the zoom-out button would ... zoom in.
*

* Introduce an extra zoom level: a 7 weeks range to compare weeks.
* Add zoom buttons to the nav pop-up.

* All buttons (and clickable areas) feel more "clickable" using a hover animation.
* Added a note in web api docs about "deleting" records.

* Fixed that when typing out a tag and then pressing a space, the autocompletion popup was not hidden.