Update to release v000r10.

byuu says:

Changelog:
- fixed LYC interrupt at LY=0 (fixes Makai Toushi SaGa)
- fixed MBC3 ROM bank mapping (fixes Harvest Moon GBC)
- added Super Game Boy MLT_REQ support to JOYP, needed for ICD2-R emulation
- temporarily changed System::run() to execute only four cycles before
  exiting for bsnes, will make two versions later
- uses actual boot ROMs, has DMG+SGB1 for now. Need SGB2, don't care
  about CGB. Defaults to SGB1, no way to select just yet.  DMG 4-second
  wait is annoying. Does not force games to act like SGB on bgameboy
  itself, because that has no ICD2 and fails the required MLT_REQ check

gameboy/lcd/lcd.cpp

@@ -30,19 +30,18 @@ void LCD::add_clocks(unsigned clocks) {
 
 void LCD::scanline() {
   status.lx -= 456;
-  status.ly++;
+  if(++status.ly == 154) frame();
 
   if(status.interrupt_lyc == true) {
     if(status.ly == status.lyc) cpu.interrupt_raise(CPU::Interrupt::Stat);
   }
 
+  if(status.ly < 144) render();
+
   if(status.ly == 144) {
     cpu.interrupt_raise(CPU::Interrupt::Vblank);
     if(status.interrupt_vblank) cpu.interrupt_raise(CPU::Interrupt::Stat);
   }
-  if(status.ly == 154) frame();
-
-  if(status.ly < 144) render();
 }
 
 void LCD::frame() {