Last minor thing about the correction of your Library. I also noticed that the list of easing styles in the documentation was incoherent. Not on the java doc reference page, but on the main home page of your site and on the PDF document «Ani_Cheat_Sheet». Actually, you got this :

easings

• Ani.LINEAR
  Ani.QUAD_IN
  Ani.QUAD_OUT
  Ani.QUAD_IN_OUT
  Ani.CUBIC_IN
  Ani.CUBIC_IN_OUT
  Ani.CUBIC_OUT
  Ani.QUART_IN
  Ani.QUART_OUT
  Ani.QUART_IN_OUT
  Ani.QUINT_IN
  Ani.QUINT_OUT
  Ani.QUINT_IN_OUT
  Ani.SINE_IN
  Ani.SINE_OUT
  Ani.SINE_IN_OUT
  Ani.CIRC_IN
  Ani.CIRC_OUT
  Ani.CIRC_IN_OUT
  Ani.EXPO_IN
  Ani.EXPO_OUT
  Ani.EXPO_IN_OUT
  Ani.BACK_IN
  Ani.BACK_OUT
  Ani.BACK_IN_OUT
  Ani.BOUNCE_IN
  Ani.BOUNCE_OUT
  Ani.BOUNCE_IN_OUT
  Ani.ELASTIC_IN
  Ani.ELASTIC_OUT
  Ani.ELASTIC_IN_OUT

It should be like this :

easings

• Ani.LINEAR
  Ani.QUAD_IN
  Ani.QUAD_OUT
  Ani.QUAD_IN_OUT
  Ani.CUBIC_IN
  Ani.CUBIC_OUT
  Ani.CUBIC_IN_OUT
  Ani.QUART_IN
  Ani.QUART_OUT
  Ani.QUART_IN_OUT
  Ani.QUINT_IN
  Ani.QUINT_OUT
  Ani.QUINT_IN_OUT
  Ani.SINE_IN
  Ani.SINE_OUT
  Ani.SINE_IN_OUT
  Ani.CIRC_IN
  Ani.CIRC_OUT
  Ani.CIRC_IN_OUT
  Ani.EXPO_IN
  Ani.EXPO_OUT
  Ani.EXPO_IN_OUT
  Ani.BACK_IN
  Ani.BACK_OUT
  Ani.BACK_IN_OUT
  Ani.BOUNCE_IN
  Ani.BOUNCE_OUT
  Ani.BOUNCE_IN_OUT
  Ani.ELASTIC_IN
  Ani.ELASTIC_OUT
  Ani.ELASTIC_IN_OUT

I just inverse order of line 7 and 8. And maybe that was part of the initial problem.

Take care.

JFR