v0.15.0

MIRT v0.15.0

Diff since v0.14.1

Merged pull requests:

• Compat with LMAA 0.7 (#102) (@JeffFessler)
• Support units (#103) (@JeffFessler)
• Fix for ellipse_im with nonzero rotation (#106) (@cjblocker)
• diffl doctests (#107) (@JeffFessler)
• Purge deprecated functions (#108) (@JeffFessler)