Version 1.2.11 2009-12-22

Multi-session models -- fixed bug in coding of 'session' that caused results to be mislabelled 
if session labels were not in alphanumeric order (e.g. '18Apr06' then '15Apr07' caused an error).

Version 1.2.10 2009-10-21

large models -- more memory allocation in external C code (malloc)
new example datasets -- 'possum' and 'ovenbird'
confint.secr -- improved profile likelihood confidence intervals, including real parameters
secr.loglikfn -- detects non-finite values of real parameters during maximization & terminates (cf stepmax in nlm)
sim.capthist -- time-varying detection parameters
sim.resight -- new function
secr.fit -- experimental and undocumented mark-resight

Version 1.2.9 2009-10-05

split.traps -- new method
print.traps -- now displays component name if list
secr.fit -- new argument details$minprob; new default 1e-50 may affect likelihood
print.capthist -- new argument 'condense' for condensed printing of proximity data
verify.mask -- fixed bug with mask lists
verify.capthist -- additional checks for missing or badly coded data

Version 1.2.8 2009-09-30 and later

Further changes to external C code for non-Windows platforms (now expected to work)
Minor editting of documentation files
Improved handling of multi-session capthist objects (2009 10 01)
Restore output of dAICc in AIC.secr (2009 10 02)

Version 1.2.7 2009-09-29

External C code re-written to conform to ISO C99 for use on non-Windows platforms
External C code now relies on R math functions dpois, dbinom
make.capthist -- new argument 'sortrows'
print.secr -- minor changes
secr.fit -- secr version number recorded in secr object
secr.fit -- optional check of input data with 'verify' 
verify (new) -- function to check data in capthist objects
ip.secr (new) -- density estimated by simulation and inverse prediction
collate -- minor bug fixed
plot.secr -- confidence limits of detection function by delta method
vcov.secr -- new option for covariances between real parameters

Version 1.2.6 2009-09-10

Simulation functions (sim.popn, sim.capthist, simulate, sim.secr) use R random number generators and seeds.
New S3 method simulate.secr and function sim.secr for simulating from a fitted secr model
New S3 methods deviance and df.residual
secr.make.newdata is now exported (previously internal)
Additional components in secr object returned by secr.fit: design, D, start
Bugs fixed in secr.make.newdata, secr.fit and make.capthist
