The font weight was not being saved to the user settings

1) Save the font weight to the user settings
2) Show the font weight and font style in the options dialog as in the font dialog
Merge pull request #179 from kvakulo/fix-save-font-weight

The font weight was not being saved to the user settings
Allow a negative value when "postponing" a task

Effectively bringing the task forward to an earlier due day.
Add "O" as access key in the filter dialog
Merge pull request #181 from kvakulo/fix-allow-negative-postpone

Allow a negative value when "postponing" a task
Merge pull request #182 from kvakulo/add-access-key-to-ok-button

Add "O" as access key in the filter dialog
Installer configuration for Inno Setup
Added simple bat file to run inno setup compiler from command line
Add Control-Shift-C hotkey to copy selected task to task edit field

Adds a feature to quickly copy existing tasks to the task edit field via
Control-Shift-C.
Closes (bug) #184: Misinterprets task description as a Project

Changed regular expression for project pattern in the Task class to
require either a space or beginning of line before the plus sign. The
space is not retained in the regex match.

Closes bug #184: Misinterprets task description as a Project (bug).
Merge pull request #183 from kvakulo/inno-installer

Inno installer
Preparing release 2.3.0
Merge pull request #185 from mjdescy/dev

Add Control-Shift-C hotkey to copy selected task to task edit field
Preparing release 2.3.1
Add Feature: Respect Line Endings (Close #166)

The TaskList class will now identify Unix or Windows line endings when
reading a file, and respect those line endings when writing the file.
This closes Issue #166.
Merge pull request #186 from mjdescy/respectlineendings

Add Feature: Respect Line Endings (Closes #166)
Installer configuration for Inno Setup
Added simple bat file to run inno setup compiler from command line
Preparing release 2.3.0
Preparing release 2.3.1