Spring-core IllegalStateException

See #230, release log:

• 45c88e5 by @yegor256: #320 Front and StickyFutures
• 4aed283 by @yegor256: ignore
• 8cd469a by @yegor256: graphs
• 2bb809f by @yegor256: more research
• 8da91a4 by @yegor256: donate badge
• e70f2f3 by @rultor: Merge branch '__rultor'
• 48f0ee1 by @rultor: Merge branch '__rultor'
• 8c40bd2 by @yegor256: #229 doc fixed
• 0cb7e82 by @yegor256: #229 version removed
• 831bdc2 by @llorllale: (#142) Implemented calculation...
• 73640fd by @rok-povsic: Merge branch 'master' into tcc...
• 7ed2e42 by @rultor: Merge branch '__rultor'
• e73959d by @llorllale: (#145) MWE: implemented calcul...
• 86f3f0d by @llorllale: (#142) SCOM: Implemented calcu...
• 38f0609 by @llorllale: (#145) MWE: implemented calcul...
• 752b4d5 by @llorllale: (#135) Added schema location t...
• 63c7147 by @llorllale: Merge branch 'master' of https...
• 0828987 by @llorllale: (#142) Calculating SCOM_minK
• 9f94179 by @llorllale: Merge branch 'master' of https...
• f2c555f by @rultor: Merge branch '__rultor'
• and 49 more...

Released by Rultor 1.67.2, see build log