astrochron v0.8 (Release date: 2018-05-16)
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New functions: 

* calcPeriods
* confAdjust
* eTimeOpt
* eTimeOptTrack
* makeNoise
* mtmPL
* multiTest
* pwrLaw
* pwrLawFit
* testBackground
* timeOptMCMC
* tracePeak
* trackPeak

Other changes:

* function getData: new data added: "graptolite" and "Xiamaling-CuAl".
* function lowspec: when `output=2`, order has been changed to match other mtm-based functions. 
* function lowspec: `Harmonic_F-test_CL` renamed `Harmonic_CL` 
* function periodogram: replaced `ar1 ` option with `background`, allowing ar1 or pwrLaw fit.
* function timeOpt: new option `fitModPwr`
* function timeOptSim: implementation of new p-value estimation procedure. 
* function timeOptSim: the function is now parallelized. 
* function timeOptSim: when `output=2`, now only one column is output, containing r2opt results from all simulations.
* function timeOptSim: order of options on function call has been changed.
* `check` option added to functions linterp, sedrate2time, taner, tune, read, readMatrix, hilbert, timeOpt