v1.7.7

JsonGrinder v1.7.7

Diff since v1.7.6

Closed issues:

• make prune_json more type-stable (#67)
• remove valset from example since we're not validating anything (#72)

Merged pull requests:

• Added extractor scheme. (#69) (@kozvojtex)
• documentation upgraded to julia 1.6 (#70) (@racinmat)
• CompatHelper: bump compat for "Mill" to "2.5" (#71) (@github-actions[bot])
• CompatHelper: bump compat for "HierarchicalUtils" to "1.9" (#73) (@github-actions[bot])