Purr Data release candidate 2!

* added delread4~ alias for vd~
* loaded Gem dependencies properly under Windows
* added help menu item for list of internal classes
* various help patch cleanups and fixes
* changed zoom/fit keyboard shortcuts so they work on all platforms
* localized the canvas right-click menu
* small fixes to prefs menu and edit menu
* fixed bug with color updates for iemguis
* zoom correctly on OSX 10.8

please report lots of bugs to
https://git.purrdata.net/jwilkes/purr-data/issues

Binaries:

rpi Raspbian (armv7l): https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-armv7l-raspbian-rc2.deb

Debian Jessie 32-bit: https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-i386-debian_jessie-rc2.deb

Debian Jessie 64-bit: https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-x86_64-debian_jessie-rc2.deb

Ubuntu 14.04 32-bit: https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-i386-ubuntu-14.04-rc2.deb

Ubuntu 14.04 64-bit: https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-x86_64-ubuntu-14.04-rc2.deb

Ubuntu 16.04 64-bit: https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-x86_64-ubuntu-16.04-rc2.deb

Windows with 64-bit GUI: https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-x86_64-windows-rc2.zip

OSX 64-bit: https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-x86_64-osx-rc2.dmg)

OSX 64-bit Stuck in a Trap Edition (10.8): https://git.purrdata.net/jwilkes/purr-data-binaries/raw/master/purr-data-x86_64-osx-10.8-rc2.dmg