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Commit 2018-11-09 10:22 6273837f

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feat(analysis): add emetric spaces

Estimated changes

deleted theorem coe_dist
added theorem dist_eq_edist
added theorem dist_eq_nndist
added theorem edist_dist
added theorem edist_eq_dist
added theorem edist_eq_nndist
added theorem edist_ne_top
added theorem nndist_eq_dist
added theorem nndist_eq_edist
added theorem uniformity_edist'
added theorem uniformity_edist
added theorem ennreal.add_halves
added theorem ennreal.add_lt_add
added theorem ennreal.coe_div
modified theorem ennreal.coe_nat
added theorem ennreal.div_pos_iff
added theorem ennreal.div_self
added theorem ennreal.nat_ne_top
added theorem ennreal.top_ne_nat
added theorem ennreal.zero_to_nnreal