[doc][algorithms][num_segments] add back documentation for num_segments algorithm
Merge pull request #169 from mkaravel/feature/distance

[test][distance] add unit test for distance of pointlike-pointlike geometries
Merge pull request #170 from mkaravel/doc/add_back_doc_for_num_segments

[doc][algorithms][num_segments] add back documentation for num_segments algorithm
[buffer] Fix last_segment_index if range (outputted by join strategy) is empty
[buffer][fix] fix round join strategy, it should not use acos for non-normalized
dot product. Now we use atan2 to calculate the angles
Merge branch 'develop' of github.com:boostorg/geometry into develop
[buffer] use math::pi instead of M_PI
[test][buffer] Add CCW test polygons (not tested yet).
[buffer] Suppress MSVC unused parameters warnings.
[test][buffer] Add test cases for Polygon.
[buffer] remove redundant bracket
[buffer][test] add custom-strategy version and test scenario which did round-join buffer fail
[buffer][test] remove default values for new tests
[test][buffer] enhance svg display for test results and deflated polygons.
By default pieces/turns are non visible now
[test][buffer] uncommented deflated indentation tests, which pass now
[test][buffer] more deflation tests and move order
[test][buffer] test ccw by default
[test][buffer] add deflate test for multi, including failing for distance=half of square
[test][buffer] add simplex square for failing deflate case
[test][buffer] remove _neg suffix from test-case-name, it is done automatically