Add a new algorithm to calculate the true-peak. It implements the
Whittaker- Shannon interpolation from four samples to create 4
intermediate samples (5 x oversampling) inbetween the middle two
samples.

With 4 samples and 4 intermediate samples the algorithm can be
implemented as a 4x4 vector-matrix cross product, which is ideal for
SSE.

I've also replaced the sample-peak algorithm using SSE as well to
improve performance.

Closes obsproject/obs-studio#1189

Replays was ignoring user's settings when generating replays filenames.

Closes obsproject/obs-studio#1266

Fixes the paste filters right click option to behave like copy.

See: https://obsproject.com/mantis/view.php?id=1220
and #1261

Closes obsproject/obs-studio#1259

Audio controls in OBS Mixer and Advanced Audio Properties window are not
sorted at all.  Every time OBS is restarted they get shuffled (Jim note:
This is due to json object hashing).  The order of these controls is
additionally not consistent between the mixer and the advanced audio
properties window.

Closes obsproject/obs-studio#1242

The "Delete" shortcut is already set in the UI/forms so the old code
would only change shortcuts in macOS.

Closes obsproject/obs-studio#1212

On windows, the "Always on top" state can safely be used without closing
dialogs.

Closes obsproject/obs-studio#1207

Holds the clipping flash for one second to better indicate that clipping
is occurring.

Closes obsproject/obs-studio#1201

Add Selected and Hidden Array Values

Let developers get and set whether items in an editable list are hidden
or selected. May be useful in when editable lists are modified and
handled in a callback. Especially when edit button callbacks are used.

Closes obsproject/obs-studio#1200

Due to the commit 34c14829, source loading is now deferred
to after OBSInit(), which would cause saved scene/source projectors to
no longer load on startup.  This fixes that issue by moving the
OpenSavedProjectors call to OBSBasic::Load().

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 an alternative means of isolating the CEF initialization process
from Qt's initialization process.  This is an unpleasant hack, but is
far more preferable than isolating the entire browser plugin to a
separate process and overly complexifying the browser plugin to the
point to where no one wants to touch the plugin or contribute to it.

Allows the ability to perform multiple actions that would normally save,
and defer the save until all of those actions are complete.

Closes obsproject/obs-studio#1231

OpenSavedProjectors is already called from RefreshSceneCollections
earlier by OBSInit.

Some headers are no longer unconditionally included, leading to
build failures.

http://code.qt.io/cgit/qt/qtbase.git/commit/?id=748836dae80a7d11901f3f0630168829076d11a8
http://code.qt.io/cgit/qt/qtbase.git/commit/?id=000c76ada5cc21479fc479be16a7507fed6490f8
http://code.qt.io/cgit/qt/qtbase.git/commit/?id=058474884c2505a8a00d4c59b4922bfcd3597c2f

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.

Allows the ability to get log files from other configuration
subdirectories (i.e. "%appdata%/obs-studio/crashes")

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.

Saves a bit of bandwidth when the update module just updates binaries
for the specific architecture being updated.  Especially true when
libcef needs to be updated.