increment version number
mac/mount: conditionally use ramdisk for webdav cache

The RAM disk is error-prone and limiting by nature. If there
is no reason to use it, because FileVault is enabled, then just
avoid it.
mac/system_changes: use full path for fdesetup

Since we rely on the information returned from fdesetup
for security purposes, we use the full path to the executable.
util: remove unused Enumerate helper class

We now use make_range() with the iterator helper class to
create temporary range objects.
build system: Xcode: use -flto instead of -emit-llvm
build system: Xcode: use correct empty string test in shell script
build system: Xcode: fail with a good error message if upx doesn't exist
tools: read gpg passphrase from terminal in sign_and_build_release_packages
tools: sign_and_build_release_packages: check for required tools before running build
Merge branch 'master' of github.com:safeapp/safe