… on context graph

also, improve the error message

System.IO.IOException : The configured user limit (128) on the number of inotify instances has been reached.

Feat/#161 aspnetcore2.0

Closes #205

AscendingSort: 30.9% improvement
DescendingSort: 20% improvement

BEFORE

          Method |     Mean |     Error |    StdDev|
--------------- |---------:|----------:|----------:|
  AscendingSort | 4.558 us | 0.2451 us | 0.6832 us |
 DescendingSort | 4.218 us | 0.1780 us | 0.4990 us |

AFTER

          Method |     Mean |     Error |    StdDev |
--------------- |---------:|----------:|----------:|
  AscendingSort | 3.146 us | 0.0326 us | 0.0709 us |
 DescendingSort | 3.372 us | 0.1228 us | 0.2618 us |

Closes #197

fix(AttrAttribute): unexpected scenarios cause breaking change

specify symbols server for develop

v2.3.4 Introduce ResourceDefinition

…-logging

chore(appsettings): supress middleware logging

test/#318: empty collection returned for PATCH requests

fix(operations): interface hierarchy

develop → master: operations

this is because we made the ContextGraph a static instance...if C# ever supports interfaced statics, we could swap the IContextGraph source when the test assembly starts executing

…cution

fix(#337): run tests serially

add documentation