Add persistence for solver show progress.

See https://github.com/shlomif/PySolFC/issues/38 :

<<<
Currently the solver dialog (Assist → Solver when playing Freecell or
other supported games) does not remember its "Preset" , "Max Iterations"
and "Show Progress" settings - either across sessions of PySol or even
after closing and invoking it again. It should remember those but note
that it should not remember the "Game" setting because one can switch to
a different game.
>>>

pysollib/options.py

@@ -111,6 +111,7 @@ favorite_gameid = int_list
 visible_buttons = string_list
 translate_game_names = boolean
 solver_presets = string_list
+solver_show_progress = boolean
 
 [sound_samples]
 move = boolean
@@ -244,6 +245,7 @@ class Options:
         ('tabletile_name', 'str'),
         ('translate_game_names', 'bool'),
         ('solver_presets', 'list'),
+        ('solver_show_progress', 'bool'),
         # ('toolbar_vars', 'list'),
         # ('recent_gameid', 'list'),
         # ('favorite_gameid', 'list'),
@@ -410,6 +412,7 @@ class Options:
             'video-editing',
             'yellow-brick-road',
             ]
+        self.solver_show_progress = True
 
     def setDefaults(self, top=None):
         WIN_SYSTEM = pysollib.settings.WIN_SYSTEM

pysollib/ui/tktile/solverdialog.py

@@ -6,6 +6,9 @@ from pysollib.settings import TITLE
 
 
 class BaseSolverDialog:
+    def _ToggleShowProgressButton(self, *args):
+        self.app.opt.solver_show_progress = self.progress_var.get()
+
     def __init__(self, parent, app, **kw):
         self.parent = parent
         self.app = app
@@ -60,9 +63,10 @@ class BaseSolverDialog:
         #
         row += 1
         self.progress_var = tkinter.BooleanVar()
-        self.progress_var.set(True)
+        self.progress_var.set(self.app.opt.solver_show_progress)
         w = self._createShowProgressButton(frame)
         w.grid(row=row, column=0, columnspan=2, sticky='ew', padx=2, pady=2)
+        w.config(command=self._ToggleShowProgressButton)
 
         #
         label_frame = self._calcToolkit().LabelFrame(
@@ -151,7 +155,7 @@ class BaseSolverDialog:
         game.solver = solver
         preset = self.preset_var.get()
         max_iters = self.max_iters_var.get()
-        progress = self.progress_var.get()
+        progress = self.app.opt.solver_show_progress
         solver.config(preset=preset, max_iters=max_iters, progress=progress)
         solver.computeHints()
         hints_len = len(solver.hints)-1