v0.2.0

SolverTools v0.2.0

Diff since v0.1.12

Merged pull requests:

• CompatHelper: bump compat for "DataFrames" to "0.21" (#139) (@github-actions[bot])
• Update to support NLPModels 0.13 and update version to 0.2.0 (#141) (@abelsiqueira)