Not sure why TPT's ellptical brush currently looks like that,
when you type "pixel circle" on Google every result is the
smooth version.
Got the idea from this post:
https://powdertoy.co.uk/Browse/View.html?ID=2464991
Signed-off-by: Nick Renieris <velocityra@gmail.com>
Currently only affects the smudge tool. I'd have to look
into the others to decide if they need chaging. They probably
do though, they're not exactly intuitive.
I also fixed a bug with DropDowns where their popup would
show up in some random place if the parent window was a
ScrollPanel, and changed a few alignments here and there.
Notably, DropDowns now align the popup so that the currently
selected item is vertically centered and doesn't move when
the popup is opened.
Not a perfect solution as it doesn't remember the modifications
made to previous commands, but it's more common to be concerned
about the command being entered than about the changes made to
the previous commands.
Add multithreaded compilation flag
Fix autogenerated portions being output all on one line
Fix irrelevant bug where filters may not be added if there aren't any source files in that directory, but subdirectories do have source files
That wrap_if_needed call would sometimes cause empty newlines
to appear under otherwise already well-wrapped blocks of text.
The idea is that whenever a new character is about to be appended,
the current line is checked for being too long with that character
included, and the character is only actually appended after the
wrapper makes sure that appending it won't overflow the line by
inserting a newline. This means that wrap_if_needed is only ever
called before pushing the current character to records, never
after, as was the case here.
This adds an exception from brush-based sparking behaviour for
elements that have a ctypeDraw function. A functionally equivalent
exception has been removed in de1fc0f, thus making it impossible to
ctype-draw SPRK on a few elements that otherwise aren't sparkable,
such as CONV.
