FIMS 0.2.0.0

Added a pkgdown site for FIMS
Add code cov tests and site link
Remove recruitment bias correction and adjustment because we plan to use TMB (#185)
Improve logging coverage and separate logs into multiple files
Put recruitment deviations on the log scale when input
Report more values with standard errors
Code cleanup, documentation, and consistency improvements
Remove rapidjson dependence
Add start_year and end_year as slots to FIMSFrame
Make log_obs_error a vector
Load the Rcpp module upon package install so components don't need to be prefaced by fims$
Refactor vectors to use fims::Vector class
Add Newton steps to FIMS integration test to improve convergence in integration test

FIMS 0.1.0.0