Changes

• Fix error messages not being shown when initialization fails
• Fix emulation error not being shown when launched with '--quit-after-emulation'
• Fix AppImage not including libspeexdsp
• Fix mupen64plus-video-parallel not respecting rdp full sync
• Fix crash when quitting RMG while the ROM browser is refreshing
• Fix initial column sizes being incorrect in some cases
• Add exception handler for Windows which generates a minidump
• Change "Join Session" to "Browse Sessions" in the Netplay menu
• Change ROM browser cache limit to 250000
• Remove "Synchronize RDP and CPU" setting from mupen64plus-video-parallel
• Improve loading time of the ROM browser when there are invalid ROMs in the ROM directory