Confirming everything is 64bit except the go stuff:
TorBrowser.app find . | xargs -- file | grep Mach | grep -v "64-bit" ./TorBrowser/Tor/PluggableTransports/meek-client: Mach-O executable i386 ./TorBrowser/Tor/PluggableTransports/meek-client-torbrowser: Mach-O executable i386 ./TorBrowser/Tor/PluggableTransports/obfs4proxy: Mach-O executable i386
On OS 10.10: cnn over http: okay https: okay onion browsing: okay (god I love the fact that I can remember facebook's onion url!!!) youtube (Daniel Radcliffe rapping Blackalicious' "Alphabet Aerobics"): okay http://samy.pl/evercookie - new identity cleared everything
WebGL - I couldn't get this to work (I thought it might be behind an infobar?) but I'm also not certain I used good tests
Also amusingly, going to about:accounts lets me try and sign into Firefox Sync (I didn't try).
HTTPS-Everywhere: 5.0development0 NoScript 2.6.9.3 TorButton 1.8.0.1 TorLauncher 0.2.7.0.1 Firefox 31.2.0
About: TorBrowser says 'Firefox ESR' with the firefox logo.
-tom