[src] add mod3 search program

Merge branch 'master' of github.com:xbarin02/collatz

Update README.md

lumi script update

[lumi] update project id

using (3n+1)/2 as an odd step

add cerit h2 script

add metacentrum scripts for h2 sieve

add pbs-m1 script

fix h2-esieve-2^24 prefix

fix last prefix

add h2esieve-24 support

update bootstrap to h2esieve-24

add h2-esieve-2^34 sieve support

[scripts] experimentally switch bootstrap to hesieve

[server] add h-esieve-24 support

add cerit scripts

add h-e-sieve metacentrum script

add metacentrum script

rename phi script

[server] update chk-tool for h-e-sieve

[server] add new prefixes

[scripts] use /tmp rather than /scratch/project/

[scripts] lumi script updated

[worker] cleanup

[worker] the HSIEVE do not generate correct max-assignments.txt

to not break MUL when RET failed

[server] -m to invalidate max. assignments

[worker] experimentally keeping only USE_HSIEVE

[worker] experimentally add USE_PRECALC_SIEVE and USE_HSIEVE macros