Merge branch 'master' of https://github.com/IPGP/rinexmod

Bump version: 3.5.2 → 3.5.3

Merge pull request #156 from IPGP/dev-tpx1_02a

keep_rnx_rec fir sat sys too

Update setup.py

Merge pull request #147 from IPGP/prerelease

Prerelease v3.4.0

Merge pull request #132 from IPGP/dev-tpx1_02a

v3.3.0

Merge pull request #116 from IPGP/dev_2406_sitlog_update_01a

add err & warn

Merge pull request #110 from IPGP/dev_2406_sitlog_update_01a

Dev 2406 sitlog update 01a