v0.3.3

Thermodynamics v0.3.3

Diff since v0.3.2

Merged pull requests:

• Make q non-optional so that FT is gauranteed to be inferred (#40) (@charleskawczynski)
• Add dependency on ExprTools to fix version (#41) (@charleskawczynski)
• Fix broken link (#43) (@charleskawczynski)