Release 0.18 (#520) 

Merge #438 438: Angle: add the normalize_zero method r=kvark a=mathstuf This method is like `normalize` except that it normalizes to have an absolute value of no more than `turn_div_2`. --- This is useful for making sure that an angle is no more than some offset from a target angle (e.g., implementing maximum turn rates in games). Co-authored-by: Ben Boeckel <mathstuf@gmail.com>

Bump cargo version 

Merge pull request #443 from brendanzab/v0.16 Release v0.16

Update CHANGELOG 

Merge pull request #411 from brendanzab/version-bump Bump cargo version to v0.14.1

Merge pull request #408 from brendanzab/version-bump Bump cargo version to v0.14.0

Merge pull request #405 from ebkalderon/master Update serialization to serde v1.0

Merge pull request #401 from brendanzab/bump-version Bump cargo version to v0.13

Merge pull request #382 from brendanzab/version-bump Version bump