Version 12 New point types

Additional releases are available elsewhere:

• For all linux distributions using the Engauge release for Flathub as part of the Flathub Project
• For all linux distributions using the Engauge Digitizer for Snapcraft from the Snapcraft Store
• For many linux distributions as part of the distribution
• For OSX from the Mac App Store on your Mac computer
• From the cygwin installer in Windows

Release changes:

• New hourglass and triangle point types (#346)
• Fix data export for log scale data when step factor is less than one (#345)