first commit
some minor changes
Merge branch 'master' into fitter
added a prototype residuals class
first commit, test timing model function, not meant as a prototype
Fixed a bug reading 1-character obs codes in Tempo2 TOAs
Improved observatory reading and a obs class.  Added WGS-84 conversion.
Removed debugging print and fixed typo
Added lat/lon for observatories and IERS correction for UT1-UTC.
test functions for residuals class
slight change to allow test of resids class
remove F0.py
many additions
test resids class
.tim file
allow addition and subtraction of zero from toas for testing
minor tweaks
remove .tim file
use test J0000+0000.tim file instead of real .tim file
Merge branch 'fitter'