v0.8.0

Thermodynamics v0.8.0

Diff since v0.7.1

Merged pull requests:

• add a specific enthalpy route for thermodynamic state (#97) (@yairchn)
• Up docs (run on 1.7), qualify, drop 1.4 (#101) (@charleskawczynski)
• Add microbenchmarks (#102) (@charleskawczynski)
• Add JET tests (#103) (@charleskawczynski)
• Fix broken tests via upgrading RootSolvers (#104) (@charleskawczynski)
• Extend microbenchmarks (#105) (@charleskawczynski)
• Extend JET tests (#106) (@charleskawczynski)
• Remove type piracy (#107) (@charleskawczynski)
• Disallow negative q_vap_sat (#108) (@charleskawczynski)