Wildboottest

[Diff since v0.6.6](https://github.com/droodman/WildBootTests.jl/compare/v0.6.6...v0.7.0)


**Closed issues:**
- Announce on Julia Discourse (6)

**Merged pull requests:**
- Restarting WRE prep optimization (8) (droodman)

[Diff since v0.6.5](https://github.com/droodman/WildBootTests.jl/compare/v0.6.5...v0.6.6)

[Diff since v0.6.4](https://github.com/droodman/WildBootTests.jl/compare/v0.6.4...v0.6.5)


**Closed issues:**
- A minor bug in confidence intervals for multi-variable hypotheses with nonull & when p-val = 0 (5)

[Diff since v0.6.3](https://github.com/droodman/WildBootTests.jl/compare/v0.6.3...v0.6.4)

[Diff since v0.6.2](https://github.com/droodman/WildBootTests.jl/compare/v0.6.2...v0.6.3)


**Closed issues:**
- t-stat discrepancies for boottests with and without fixed effects (4)

[Diff since v0.6.1](https://github.com/droodman/WildBootTests.jl/compare/v0.6.1...v0.6.2)