Bgufix for leaf creation #70 - thanks @ThisIsADogHello

Included PRs:

• #46
• #53
• #55
• #58
• #59
• #60
• #61

Resolved Issues:

• #48
• #49
• #50
• #52
• #57

Thanks. @luketimothyjones

Initial release through GitHub Releases
Compatible with Blender 2.8+

(Download source code zip and install through Blender add-on interface)