wxScheduler basicrules: occur every _mean_ synodic month
wx Tasklist: improve comment
wx Tasklist: move DEFAULT_FILTERS into the Filters class
wx Tasklist: improve code style
wx Alarms: use BU_EXACTFIT for alarm buttons
wx Organism_alarms: only log item headers
wx Scheduler: fit list buttons in one column
wx Classes, choices: let specify how deep the Layout should be
wx Classes, choices: allow setting the selection
Coreaux, cliargparse: reduce line length
Configuration: separate stdout and file log levels
wx Tasklist: rename some attributes
wx Tasklist: re-implement filters with a navigator

Addresses #227
Reset some menu accelerators
wx Tasklist: add menu items for controlling the navigator

Addresses #227
wx GUI: Reset the menus only when the top-level ones are closed
wx Tasklist: simplify code
wx Tasklist: Let set the first day of the week

Addresses #227
wx Tasklist: Remember navigator show status

Addresses #227
wx Tasklist: rename variable