Update CHANGELOG for 0.8.5 (rust-random#1221)

Merge pull request rust-random#1208 from newpavlov/rand_distr/fix_no_std

rand_distr: fix no_std build

rand_distr: Bump version

Merge pull request rust-random#1137 from rust-random/work2

Prepare rand 0.8.4 release, core 0.6.3, distr 0.4.1, pcg 0.3.1, hc 0.3.1

Merge pull request rust-random#1137 from rust-random/work2

Prepare rand 0.8.4 release, core 0.6.3, distr 0.4.1, pcg 0.3.1, hc 0.3.1

Merge pull request rust-random#1137 from rust-random/work2

Prepare rand 0.8.4 release, core 0.6.3, distr 0.4.1, pcg 0.3.1, hc 0.3.1

Merge pull request rust-random#1137 from rust-random/work2

Prepare rand 0.8.4 release, core 0.6.3, distr 0.4.1, pcg 0.3.1, hc 0.3.1

Merge pull request rust-random#1137 from rust-random/work2

Prepare rand 0.8.4 release, core 0.6.3, distr 0.4.1, pcg 0.3.1, hc 0.3.1

Merge pull request rust-random#1135 from dhardy/work

Prepare rand_chacha v0.3.1 release

Merge pull request rust-random#1096 from tmandry/patch-1

Fix assertions inside read_{u32,u64}_into