This can happen when trying to write to a closed socket (in the case
of an RTMP server closing the connection).

Fixes: https://obsproject.com/mantis/view.php?id=1446

Without this, we strcmp a null pointer if no theme is set in the
configuration file.

The system theme was named Default even though the default theme is Dark.
This addresses that by renaming Default.qss to System.qss. I've made it
backwards compatible so users already using this theme are not affected.

The theme list now shows up as:
-System
-Dark (Default)
-Acri
-Rachni

I have also made it so that you can specify the default theme in the
UI config file.

This fixes a seg fault that would happen when launching OBS from the
terminal and then hitting ctrl-c.

Allows the ability to use invokeMethod on the OBSApp object to execute
an std::function.  This allows deferring an std::function call to the Qt
event queue.

Instead of relying on the default config values (which can change
depending on language), explicitly set the values when run for the first
time.

If the user doesn't use the auto-configuration on first use, set the
default encoders used in simple output mode to hardware encoders.

Closes obsproject/obs-studio#1602

Although log files are saved with the date in the name of the log file,
it's also nice to be able to see it inside the log file itself,
especially when uploaded to a text service.

OBS Studio currently does not support retina rendering for any of the
images in the app. This adds support for retina pixmap rendering as
well as adding higher resolution versions of each icon that was not
a high enough resolution to support 2x. The icons work when switching
themes and will only render the 2x versions when the device pixel
ratio is greater than or equal to 2.

I also added credits to the readme for images that were already being
used that require credit to the author. If the OBS community has
paid for these images already, I can remove the credits from the
readme. The credit is for the invisible, visible, and gear icons.

Due to reports of issues with Windows 7, if the user is on windows
version 7 or below, set the default for "Browser Source Hardware
Acceleration" to false instead of true.  This ensures optimal user
experience and still allows those who had it working to continue using
it if they so choose.

Exact cause for this issue on Windows 7 is currently unknown.

Adds a checkbox to advanced settings that allows the user to
enable/disable browser source hardware acceleration on windows.

Changes the default "preferred" GPU to the NVIDIA GPU when running the
program on NVIDIA laptops.

This commit explicitly puts "32-bit" in the title bar and OBS log for
32-bit versions of OBS. It also changes "64bit" to "64-bit" to match the
string used for Windows version info.

Allows the ability to show a web page via CEF to the users on startup to
present and announce new features.

Adds the ability to set the current palette for the program via adding
"OBSTheme" objects to the qss files.  The values for the OBSTheme object
are the values used by QPalette::ColorRole.

Modifying the global palette allows the ability to easily/quickly look
up application theme colors (especially if you would like to use them
for QML), as well as the ability to fix the hyperlink color issue.  (On
dark themes, links would still be dark blue, causing them to be
difficult to see)

This paves the way for plugins to have access to the argc/argv used
when spawning OBS. Notably, this will allow a patch to obs-browser that
passes through command line arguments on macOS to CEF.

This commit series changes the ini user configuration multiview layout
so that string values were converted to int. In order to prevent past
user saves to break we verify if the ini still have string values and
convert that to int on obs init.

This will make the code easier to maintain in clearer to read the
multiview layout settings, also, makes the addition of new layouts
easier.

Adds an option to enable/disable blocking hotkeys when the window is in
focus which is normally used in order to prevent hotkey/shortcut
conflicts.  This does not apply to the settings window; the hotkey
behavior is unchanged with the settings window (in order to prevent
hotkeys from being used while setting hotkeys for example).

Closes obsproject/obs-studio#1267

When an user launches a multiple instance of obs and don't use the -m
flag, wait until the confirmation to launch to create a new log file.
This avoids a short log with no information when using the Help ->
Update Last Log.

Closes obsproject/obs-studio#1164

Adds the ability to upload crash reports, making it easier for users to
give us crash data.  This should be considered a temporarily solution,
as automated crash reporting should be the ideal solution as soon as
time permits.

Adds a "has_prefix" parameter to delete_oldest_file and get_last_log in
order to determine whether the file has a prefix when parsing its
timestamp.  For example, crash logs are prefixed with "Crash", and thus
it was unable to get the timestamp because it couldn't parse the
filename correctly due to that fact.

Addresses Mantis issue 927 by adding the --multi/-m flag to suppress the
warning dialog.

Closes jp9000/obs-studio#964

Deprecates "Theme" global config value and uses "CurrentTheme" instead
to ensure backward compatibility with older versions of OBS, which will
fail to load if you have a theme that isn't available.

(Jim Edit: Putting this back because I misunderstood the purpose of
jp9000/obs-studio#936)