When this.options.rotation.deg = 0 default to deg (FTO)

[vanithaak]

Fixes #1190 (<=== Add issue number here)

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[vanithaak]

@7malikk please review my pr

[7malikk]

@vanithaak Nice work! Looks good, should be merged in no time. @cesswairimu @TildaDares @jywarren

[jywarren]

Great work! Merging this now!!