Exitmove tweaks

See merge request !709

Add pw_justlaunched to tell modders when a player launches from a slope

See merge request !792

Allow more options for when the titlecard shows up

See merge request !765

M_Ftrim

See merge request !798

- Use '%f' instead of '%g' to avoid going scientific. Should also fix some
  compiler warnings.
- The trailing zero trimming code is now useful. It started on the terminating
  byte before and wouldn't have done anything with '%g' anyway.
- Use the absolute fractional value to avoid a sign.

Rolling

See merge request STJr/SRB2!690

"+" command line parameters make sense

See merge request !707

Trim the trailing zeros off floats for cvars

See merge request !716

Extra emblem hint display

See merge request !721

Local Color Table for GIF movie mode

See merge request !742

Expose stoppedclock to Lua

See merge request !771

Don't freeslot TOL_ twice

See merge request !779

Get rotated sprites with v.getSprite(2)Patch

See merge request !773

Clean up the mess that is extracolormap_t::fog

See merge request !790

Allow models for skin/sprites with same name

See merge request !767

Fix overtime not working

See merge request !784

No more console in menus because codebase sucks xd

See merge request !791

This reverts commit ef3d462e.

Fix object shadow not appearing for mid-joiners

See merge request STJr/SRB2Internal!627