Release 2.2.6

• Merge pull request #48 from Dev-Lan/master (967fb09)
• add larger distance value test (884ceb8)
• switch test to chaining syntax (3557b25)
• switch test to chaining syntax (dce18a3)
• update cSize after distMatrix is updated for correct average calculation (af90148)
• add basic distance value test (837d5f1)
• simplify intermediate clusters datastructure from 2D to 1D (b670798)
• skip unneeded updates that can cause issues with other updates (592c369)
• fix updates for min index bookkeeping when linkage is not "single" (94afbbc)
• fix average cluster distance update equation (4138746)
• add tests for hcluster that demonstrate incorrect dendrogram (1cbe3dc)
• fix deps (ec7a306)
• Merge pull request #47 from jdfekete/dependabot/npm_and_yarn/word-wrap-1.2.4 (8cb45e5)
• Bump word-wrap from 1.2.3 to 1.2.4 (179d9f1)
• Merge pull request #46 from jdfekete/dependabot/npm_and_yarn/vm2-3.9.18 (13d49dc)
• Bump vm2 from 3.9.17 to 3.9.18 (c6adda3)
• Merge pull request #45 from jdfekete/dependabot/npm_and_yarn/vm2-3.9.17 (8ba7568)
• Bump vm2 from 3.9.13 to 3.9.17 (8611382)
• remove parcoord from deps to fix vulnerability. Bumped to latest versions of dependencies. (fd49eb9)
• Merge pull request #42 from jdfekete/dependabot/npm_and_yarn/json5-2.2.3 (57b6231)
• Bump json5 from 2.2.1 to 2.2.3 (489b44b)
• Merge pull request #41 from jdfekete/dependabot/npm_and_yarn/vm2-3.9.11 (6e75f95)
• Bump vm2 from 3.9.10 to 3.9.11 (5aba7ba)