Paco v4.2.1

• Bug fixes in pcofix, gcofix and pclearbot

Paco v4.2.0

• Remove hppattern.v (#47)
• Fix a variable renaming bug

Paco v4.1.2

• Remove warnings

Paco v4.1.1

• Fix pcofix tactic bug (#41)

Paco v4.1.0

• Fix pcofix tactic bug (#37)
• Remove JMeq_eq axiom (#34)

Paco v4.0.5

• Fix pcofix tactic (#34)
• Remove dependency of gpaco on JMeq_eq

Paco v4.0.4

• Fix a bug in the pcofix tactic
• General respectful closures

Paco v4.0.3

• Fix gpaco tactic (#37)

Paco v4.0.2

• Add the prespectful closure, which is another version of wrespectful.

Paco v4.0.1

• Add weak respectful closures.
• Add the lemma rclo_clo_base.